Your movie reviews are almost like a rorschach test, slowly peeling away the layers like some kind of MadMaxJr onion.. Gleefully recounting the EPIC BADASSNESS OF SIN CITY HOLY SHIT HE JUST KICKED A MAN'S BALLS INTO HIS OWN THROAT OH SHIT even though it lacks vital things like energy, wit, or subtlety. I enjoyed Sin City, but it's hard to walk out of it without thinking that every human being on the planet needs to be curb stomped before they have a chance to do terrible, depraved things to each other.
Blades of Glory, on the other hand, was a marginally delightful Will Ferrel comedy. At this point I'm willing to concede that you either get Will Ferrel, or you just don't. His comedies are always goofy, irreverent farces with little thought beyond he and his friends just having the most fun they could possibly have. Yeah, it's stupid but in that intelligent stupid that Will Ferrel does perfectly. Also it has Will Arnett and Amy Poehler as a creepy, incestuous couple of evil figure skaters.
I haven't seen Superbad. It's produced by Judd Apatow and his crew, who are either saints of modern comedy or the devil incarnate, depending who you ask.