I thought Millar's "Ultimates" was one of the best series I have ever read, and was very happy with the Fantastic 4 as well. 1985 is pretty good, but nothing revolutionary.
Kick Ass is an incredibly enjoyable, incredibly violent comic. Millar may well be talking out of his (kick) ass when he says it's realistic, but that doesn't stop it being fun. Very nice art, lots of laughs and a decent storyline, that'll do for a start.
Yes, it's VERY Ennis, and so was Old Man Wolverine, but that's not a problem for me.
Kick Ass is a cool, sweary romp that is a good adrenaline rush antidote to the safe mainstream comics. Less convoluted than The Boys, and still a lot of fun.
And racism? Just fuck off with that shit. Not all gangs are mixed race, and there actually are nasty groups of ethnic minorities out there - maybe Obama didn't get to them! Comics readers are usually above all that PC garbage.