We have a catapult as (one of) our shooter(s).
During the Niles event, we had someone from the local ABC station interview us; we demo'd our robot for him by firing a ball into the wall (this was during quarter finals, and there weren't any teams left around us). The ball bounced off the wall and landed directly in our catapult cup, completely unplanned, so we proceeded to fire it several more times, and it kept doing it's trick.
Not quite the same as doing it on the field, but it was awesome!
