In case you attended FITC in Toronto this year, you might have seen Lee Brimelow’s multi-touch presentation Touch Me Baby. Multi-touch, including gestures, is a new feature in Flash Player 10.1 and AIR 2.0, and will open a new world of interactions.
Here is an interesting demo of a Flash based 3d game based on the Alternativa 3d engine using multi-touch:
More details on Lee Brimelow’s blog.