Damn, I have missed out on this thread. My list:
Orgazmo (Parker + Stone flick that spoofs on porn industry)
Thank You For Smoking
Let's Go To Prison
Team America World Police (!@#$ Yeah)
Grandma's Boy
Silent Movie
Accepted
Fear and Loathing in Las Vegas (Johnny Depp is hysterical in this)
and to whoever said Mom and Dad Save the World, it is such a crappy movie, but funnier than hell