I'd put Penguindrum in the met hype category, personally, but that's a whole different discussion.
Tsuritama would definitely be a show which exceeded the hype. Space Brothers, too.
I'd put Mysterious Girlfriend X in as a good surprise.
And Fujiko definitely belongs as one of the biggest disappointments in recent years. AO, too, but people were a little less excited for that.
Well, it's my personal list. Other people can make their own, of course.
You haven't already seen this?
Well my post would be kind of weird if I had.