Treasures of Montezuma, the funny little free game that is quite good now, if you haven't tried it since the updates, just got a little bit better. One of the hidden features of firmware 1.80 is that this and other free games with trophies will now Sync to PSN for you.
So, you can wave them at your friends on PSN, Raptr.com or other gaming services. All you need do is install 1.80, run the game, then run the Trophy app to sync them. Dedicated players should get a nice boost to their stats.