If you can sit for 2 1/2 hours (there is an intermission built into the DVD version), The Great Race.
Live action precursor of Wacky Races, with two cars, with Tony Curtis as the ultimate good guy, and Jack Lemmon his evil nemesis.
"the best one ever'weekend at bernies'i gaurantee you will love it and split your sides laughing"
2 guys walking around with a corpse?
I saw 'Tucker and Dale vs Evil' recently which was quite good. Quite a clever take on the slasher film genre where a group of college kids go to the country and run into some hill-billies who terrorise them. This is told from the hill-billy point of view and has some very funny sequences.