Monsters vs. Aliens - first impressions

Watched half the movie last night with my 6 year old daughter, will watch the 2nd half tonight. First impressions are that the movie is very gung ho, packed with zany action. Great effects, plenty of gags, and a cool (white!) young president on top. A must-see for anyone the least bit into 3D-graphics. Funny thing...how come there are five (hero) "monsters", could it be that the burger chains always have five collector toys...