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Well, Sword Art Online, Guilty Crown, and High School of the Dead comes to mind.
Sword Art Online I hear people either praise or complain about. I lean more towards the "like it" category. I can see the problems, but I just find the show entertaining, regardless.
Guilty Crown people seems to be much more cynical about. I heard some people even call it one of the worst anime ever, which is complete bullshit. While it's not perfect, it's by no means as godawful as people make it out to be. You can say it's mediocre at best, but like Sword Art Online, I get entertainment out of it, and I can watch it more than once and not get bored.
As for High School of the Dead, my biggest complaint isn't the fanservice, but that for a zombie anime, the violence was far to tame. I've seen episodes of Adventure Time and Regular Show that had more brutal zombie action than HotD. Not even one zombie head explodes. Other than that it's a fun watch, and I can get a laugh out of some of the ecchi scenes (Matrix boobies, anyone?), and I tend to hate ecchi. Just like Guilty Crown, I can watch this multiple times.