In two-player mode, after your opponent fouls in US pool, grab the cue ball and before you take your shot, push it in between two other balls that are that are close together on the table, so that the cue ball touches both of the other balls. This nudges the balls a bit and if thay are in the right place you could set yourself up a treat, or ruin your friend's plans. The computer players don't mind, but your friend will.
In Speed Pool, put all of the balls apart from one, then line the last one with the pocket. Select SAVE, then NEW to start with one ball left on 0 minutes and 00 seconds.