Nice!
I really liked it, it was really fun and I loved the political jokes. For those of you who are dissing on this game because of the "Dubya" thing [and the hilarious quotes from Dubya that the alien says] *cough* Vyrquenox *cough*, its just a game and a joke ok? We are in America... where we were built off of FREEDOM OF SPEECH. So relax and enjoy the game. If it bothers you that much, change the name and forget it even happened. No need to get offended!
Suggestion: Tone down the difficulty. It get a bit rough pretty fast. Like add more time in between waves.