I bought 2 Moves for 30€ yesterday and got Sports Champions and some demos, and I really have to say I'm truly impressed by how well they work and how accurate they are. This is the first time I felt that motion controls really work, much better than Wiimote or Kinect.
So yeah, recommend me some games (not minigame/sports compilations though, SC is fine for that) with Move support I guess? SP, MP, Move only or just supported, doesn't matter.
I love the move implementation in LBP2, and you can do pretty much anything with it in create mode which means that there are tons of free move games with all sorts of implementations.