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