Stealth Inc is a very awesome (and very difficult) platformer that we thought pretty highly of when it came out back in November.
This brutal (in every sense of the word) plarformer won us - well, me anyway - over with it's slick style, tight controls, unrelenting difficulty, and charm. What? Ridiculously violent and challenging games can be charming, too! Anyway it's currently priced at $0.99, which is beyond worth it.
Seriously, if you like platformers and haven't played Stealth Inc yet (or have played it but wouldn't mind having it on your phone), $0.99 is a steal.