This is by far one of the best PSN titles available. Sony has one heck of a good game here and it easily kicks Wii Sports' bowling game in the can.
Getting used to holding the controller being held like it has you is quick to learn and learning how to use the spin is the only difficult part of the game. If using the right handed controls R2 is right spin, L2 left.
I got my mom to play a round too. She quite enjoyed it. Sony has a game for everyone here.