It doesn't come up often, but it came up tonight: one of my favorite rack breaking configuration. Play this one very high on the cueball, medium-hard with a lot of follow-through, so as to drive the ball deep into the rail then let the entire cue skip over the cueball (essentially a controlled miscue). The 15th ball is certain to go in and the rail sends the cueball back at high speed to whack the rack (and I really mean WHACK). The few times I played this before, the rack was just as open as after an 8-ball break, and tonight was no exception.