Austin Powers 2 and 3 (I've yet to see the first :/) and Scary Movie 2 and 3 (haven't seen the first of that either.) They are HILLARIOUS. I love the following scene in Scary Movie 3:

"Hello Father..."
"Don't call me father, I haven't been a clergyman since..."

Later:

"Goodbye Dude"
"Don't call me Dude. I haven't been a stoner since..."