I picked this up on iPhone the other day just because it was only $2.99. I paid $20 for the PC version when it came out, and I thought that was a great deal.
The iPhone version has a fun little easter egg in it. When you scroll all the way down through the achievement list (which looks like a hole in the ground), you find a skeleton of a Peggle unicorn, a depoist of Bejeweled gems, and eventually end up seeing some Chinese zombies on the other side of the world.