Just saw it last night for the first time. Hilarious! I really dug all the stuff with Dash. I'm a sucker for speedster characters. I thought Frozone was LMAO funny. I love Samuel Jackson.
As for it being compared to Watchmen, I'm not sure. I see the vague similarities. However, the JSA-type banning, and the most obvious of nods to the FF are what defined it for me. I mean, come on....Jack-Jack/Franklin Richards? It's obvious.
10 out of 10. Great movie. Will own it.
