Austin Powers: the Steamroller scene
Plan 9 From Outer Space: the Night to Day to Night to Day scene
This is Spinal Tap: the whole thing
The Big Lebowski: the whole thing
Can't think of anymore right now, but there's aplenty
I'll have to get The Big Lebowski. I've heard it's very funny.
I knew a guy just like that in Manhattan Beach (LA). My favorite scene was when the blowhard cop chief is reading Lebowski the riot act and then finishes up with the standard "You understand me, boy?!"
"I'm sorry...I wasn't listening."