NoDpad reviewed this title a while back and found it to be quite enjoyable along with some very polished artwork. They looked at it as basically Topple 2.0, a game that improved much on Topple's downfalls. It's definitely an impressive title for $0.99, and with a price of free, it's a deal too hard to pass up.
Finger Physics is definitely one of the premier physics games on the App Store, implementing the popular social platform OpenFeint along with some other cool features. The full version consists of enough levels to keep you occupied for quite some time, and while it was a slightly difficult for NoDpad's Daniel, the price of free is a lot less than it's really worth.