I am going to go with one from an old friend and our proofreader, Abbie.
Pauly Shore in Bio Dome
The mere mention of this movie to her makes her cringe and then babble with angry verses for hours.
"Who's Your Caddy" the black golf movie tops the IMDB.com list by LEAPS and BOUNDS.... http://www.imdb.com/chart/bottom
From the MaximOnline.com list how about "Blues Brothers 2000"?