Last Updated: 02/03/14 6:32pm
Westwood clears deep from his own area and Agbonlahor is on to it but Ruddy scampers out of his own area smartly to find touch.
Unsurprisingly a pretty quiet second half after the fireworks in the first period. Elmander booked for a clumsy challenge on Westwood on the edge of the Villa area.
Hooper has the best chance of the second half as he gets in the clear but his side-foot from the edge of the Villa area is palmed away low to his left by Guzan.
Norwich continue to plug away and win a throw in the Villa half. Good reception by the way for Holt from both sets of fans.
Shout for a Villa penalty as Agbonlahor's shot from the edge of the area hits Martin on the arm. It deflects behind and a corner is the result.
Norwich really short on ideas and an optimistic ball up towards Hooper at the front is easily dealt with.
Good early ball from the right by Martin releases Elmander in the Villa box but he rather snatches at his attempt and the ball skids well wide of the upright.
Olsson involved again on the left as he chases down another wayward pass but it goes out for a Villa throw-in.
Bad ball back in the direction of Olsson from halfway puts the left-back under pressure but he clears with Agbonlahor closing in.
Johnson tries to find a way to the Villa goal from the edge of the area but Vlaaar gets in the way and clears upfield.
Weimann and Olsson battle for the ball by the Norwich byline and it goes behind. The former claims for a corner but gets nothing from the official.
Benteke lays the ball back to the edge of the Norwich area and Weimann meets it first time only to sky his effort high into the stand.
Lack of communication between Tettey and Hoolahan sees the former kick the ball into touch for a Villa throw. Elmander's first contribution follows and it is being caught offside.
Hooper chases a long goal-kick from Ruddy right into the corner but only manages to knock it out for a Villa throw-in.
Johnson and Ashley Westwood collide in the middle of the park with the latter currently down and getting some treatment.
Baker meets the Bacuna corner and heads the ball back into the danger area, Norwich half clear and Bacuna crosses again straight to Ruddy.
Hooper goes down under a challenge from Baker and immediately appeals for a free-kick but nothing doing.
Benteke looks for the run of Agbonlahor in the Norwich area but Ruddy is there to make an easy catch.
No real surprise to see the game lose some of its vigour as Norwich look short on ideas at the moment and Villa are happy to hold what they have.
Free-kick to Norwich on the right taken by Hoolahan but far too strong and behind for a Villa goal-kick.
Nice build-up from Villa and Agbonlahor meets Delph's cross from the left but his header lacks any real power and is caught by Ruddy.
Great ball over the top for Agbonlahor to chase but he looks up and has no Villa team-mate to centre to and hits the defender instead.
Good work from Tetty on the edge of the Villa area and he slides the ball into Pilkington but Bacuna is back before the sub can get his shot way.
Andy Lunn says: 'I'm as shellshocked as the Norwich team right now. More of the same please so I can actually sit on the sofa watching match of the day and not behind it cowering as I normally do.'
Norwich with a mountain to climb get the second half started. Anthony Pilkington is on to take the place of Snodgrass.
Charlie from Sutton Coldfield is back: 'Sitting here pretty relieved now. Theres not many times you can say that at half time. I said Villas goal drought would come to an end, but did not expect 4. After the first few minutes who would have predicted this??? UTV'
Norwich are now right out to 66/1 with Sky Bet as they are on the wrong end of a 4-1 scoreline at the break. Villa are 1/150 and the draw is 33s. Benteke is 9/2 to score next in the HT Price Boosts and complete his hat-trick.
Snodgrass is booked for a rash tackle that knocks Bertrand off his feet while Benteke ambles over to the touchline with a boot off having fallen awkwardly.
There will be two added minutes as Agbonlahor attempts to make it five for Villa but drags his left-foot shot wide of the target.
Nifty ball from Bradley Johnson up to Hooper in between Villa defenders but the striker has just strayed offside.
Cross from Bacuna on the right is just too high for Benteke as he seeks his hat-trick. The flag had gone up for offside anyway.
OWN-GOAL BASSONG: It is four for Villa as Bertrand finds Delph down the left with a great ball and the latter's cross is delivered at pace so Bassong can only slice it into the roof of his own net.
GOAL BACUNA: Superb goal on the break from Villa as Agbonlahor bursts from midfield, picks the right pass to Weimann, who then frees Bacuna in the box and he curls his shot past the dive of Ruddy to find the far corner.
Hoolahan almost has Norwich level after lovely one-two with Hooper but his first shot is saved by Guzan and then an attempted header from the rebound is palmed behind by the Villa 'keeper.
Villa press again but Leandro Bacuna's deep cross from the right is way too strong and behind for a Ruddy goal-kick.
Olsson has made his way back on to the pitch following all the kerfuffle concerning the tackle of Tettey on Baker.
Martin Olsson off the pitch at the moment with an injury and is getting some treatment. Norwich down to 10 men for the time being.
GOAL BENTEKE: A double for the Belgian as he powers home a header from five yards from the corner to turn the game around totally.
Norwich look a little rattled now and concede corner. Sebastien Bassong then gives away another with a badly sliced clearance.
GOAL BENTEKE: Superb from the Belgian as he controls a cross on his chest and then volleys the ball home with his back to the target in spectacular fashion.
Norwich are really controlling this as Hoolahan and Snodgrass do well down the right flank. The move finally ends up with a shot from Redmond from the edge of the Villa area saved by Guzan.
Ron Vlaar gives the ball away and Snodgrass marauds forward but the former makes amends and gets back as the Scot tries to get the ball on to his favoured left side.
Snodgrass clips Bertrand on the Villa left and gives away a free-kick, which is taken short and back towards to halfway.
Redmond releases Hooper down the right channel but is rather isolated and a shot when reinforcements arrive is wide of the target.
A bit better from Villa as Agbonlahor and Weimann combine and Joseph Yobo is forced to head clear for a Villa throw. The restart is launched back into the Norwich box and Agbonlahor goes down under some pressure but nothing is given.
The free-kick is delivered by Robert Snodgrass but it is not one of his best and easily headed clear by Ryan Bertrand.
Hooper wins a free-kick on the right for Norwich and a chance to get the ball into the Villa box again.
Nice run from Alexander Tettey sets up Hooper on the edge of the Villa area but his cross towards Nathan Redmond is just too strong and goes behind for a Villa goal-kick.
GOAL HOOLAHAN: Flying start for the visitors as Wes Hoolahan releases Gary Hooper down the right then continues his run into the box to get on to the cutback and fire past Brad Guzan into the corner.
Benteke helps a long ball on towards Gabby Agbonlahor but John Ruddy is off his line smartly to smother the danger.
Early pressure for Villa as they get a free-kick after Fabian Delph is fouled and then win a corner. Neither trouble the Norwich rearguard.
The ball is launched long from the back by Villa in the direction of Christian Benteke but it goes straight out for a Norwich throw deep in their own half.
Hello to Andy Lunn: 'Why does Lambert constantly do the same thing EVERY game? We need width and Albrighton should be starting the game. Time to move this fool Lambert out of Villa Park once and for all and bring in a manager who knows what he's doing and has a plan B. Laudrup would be a good choice about now, at least we'll see some football from a Villa team. The points are yours Norwich.'
Hello to Charlie from Sutton Coldfield: 'I dont know if this is a must win or must not lose game. If Villa lose this the pressure will be immense and i can see the crowd turn against them. That said its 3 games without a goal and i cant see it being 4. I'm a bag of nerves already. Villa need to give the home fans something to cheer about. UTV'
Hello to Norwich fan Tom Tindall: 'Hi, hope my boss doesn't see me writing in but I'm thinking we can win 2-1 with a nervy finish.'
Luke Brooke is thinking along the same lines: 'I don't know what lambert is thinking keeping the same squad but i doubt it will make a difference, norwich struggle to score so im going for a boring 0-0 draw.'
Hi to Gareth Turner: 'Hi David. What a refreshing cup final - credit to both teams. Can't see anything like that at Villa park, we're hopeless at home and Norwich can't score away. 0-0 for me and both teams to narrowly avoid the drop.'
Thanks to Martin Palmer: 'Great to see Wes Hoolahan back in the Norwich starting XI. now confident can build on recent performances and take 3 important points for premiership survival. 1 : 2 to the mighty yellows.'
Aston Villa are 11/10 favourites with Sky Bet for this one with Norwich currently on offer at 11/4 if you fancy the away win. The draw can be backed at 12/5.
Thanks to Chris Green from Huddersfield, who says: 'Villa to win 2-1, with Weimann and Agbonlahor scoring the goals.'