Nice game!
I liked it. It just got kind of boring after a while, and some more power-ups would have been nice, as well as some different thigns to mix it up. Also, the neat effect of flying forward may be aided if you add some objects on the ground.
Another thing was, your character is very reminiscent of a character i made (particualr the head...), and that annoys me. i know you didn't steal it (i'm not that vain), but i'm kicking myself now for not doing something with the character earlier. Oh well, just wanted to get that out, so i don't get people telling me i stole my character from you when i eventually use him in a flash movie or game.