Some suggestions to make it better...
-Get character involvement. Use sound bytes and make playable characters like Homsar, (God of all), Homestar, Strong Bad, Sad, and Mad, The Cheat, Firebert and Renyolds from the Cheat Commandos... there's a lot you can do with that.
-Backgrounds were fine, keep those.
-Improve the pong paddles. More Homestar involvement = more gooder.
Those are a few tips to make a good game more gooder.