Like when the drums drop out on Infinity Milk by Danananakroyd:
http://www.youtube.com/watch?v=bO8MkQPoc1E

or this one on Twist of Cain by Danzig
http://www.youtube.com/watch?v=b-BwXAGDfk8

You know, the kind that get stuck in your head and that. Can be as simple or complex as you'd like.

Label your videos por favor.