Oh yeah, definitely have to agree on:
English Patient (biggest yawn ever?)
2001: A Space Odyssey (ok, not awful, but disappointing)
The Rock (yuck, Sean ain't made a good flick since Bond)
The Matrix (what a rip-off of old Twilight Zone stories)
Harry Potter (crap for kiddies)
It's A Wonderful Life (big fuss about nothing)
Manhattan/Radio Days/etc (pretty much anything from Woody Allen, except The Sleeper)
Crouching Tiger Hidden Dragon (well, mediocre, I suppose, but wasn't worth buying the DVD without seeing it first)
Add:
Notting Hill (no plot)
Casablanca (boring b/w yarn)
Truly, Madly, Deeply (turned that rubbish off)
Oh, there must be so many, but I'm trying to forget them! And trying to avoid seeing them in the first place! nd