In my local sainsburys yesterday (again!) and saw some more bargain dvds. Big Lebowski for £2.
Couple of others I hadn't noticed before too:
Bride of Frankenstein (original) £1
A Prophet - £2
Cloudy with a chance of meatballs - £3
Bad Leuitenant - £2
REC 2 - £2
One I bought was the 6 disc Humphrey Bogart collection, contained 2 disc version of Casablanca, 2 disc version of Maltese Falcon, and two other films, can't remember what they're called, all for £4!