Was having a mooch through the DVD's in Tesco and saw that The Nutty Professor was only £2. This was one of my favorites and gave me a lot of laughs when it came out.
In The Nutty Professor, Murphy stars as shy Dr. Sherman Klump, a kind, brilliant, "calorifically challenged" genetics professor, who grows desperate to whittle his 400-pound frame down to size when beautiful Carla Purty (Jada Pinkett) joins the university faculty.
There were a few other DVD's for £2 but didn't get chance to look through them. Might be worth a try looking in your local Tesco and you'll be surprised how many £2 ones there are.