The right ramp on Stargate. It's a strange shot, as hitting it requires just the right angle, but when you make it up and around it just feels really nice!
All the ramps on LotR. I'm not sure why, but all of those ramps seem extra satisfying to hit. The left ramp is so smooth and quick, while the right ramp is harder to hit, but I love the way the ball hits the target on the end and falls back down. And of course, the ring shot, especially on the fly!