I think phoenix covered it pretty well a couple pages back. But tis the time of the year for wheat beers! You'll probably be pretty surprised at how flavorful a wheat beer can be if you like shocktop/bluemoon.
Allagash White: Seems to be pretty much a staple to check out, and one of my personal favorites. I would try this first.
St. Bernardus Witbier: St. Bernardus collaborated with Pierre Celis for this (Celis is widely recognized as the sole reason why wheat beers are popular today. And original creator of Hoegaarden before Inbev raped them). It's also kind of a go-to witte for me.
http://beeradvocate.com/beer/profile/259/7879.
Ommegang Witte isn't bad. But i wouldn't put it up with the above two. You still get your classic wheat taste though not as strong.
Troeg's Dreamweaver: Forgot about this one. It's a solid wheat beer. Though you get a little less of your classic coriander/orange peel from a witte, you still get a flavorful wheat to this nose. Definitely a great session beer. Perfect for BBQ's, summer days, etc. I bought a few Troeg's variety packs and I usually end up drinking all the Dreamweaver first.
Victory Prima Pils: If you are looking for a decent session beer for the summer, that's light yet flavorful, can drink outside, and won't get sick of. I can't stress enough how great of a beer this is. Many people stray away from heavier craft beers in the summer because of that reason. It's light yet has a surprisingly full bodied taste. Not a witte, though, if you like bluemoon/shocktop i can't see you hating this beer.
Flying Fish ESB/Troegs Amber ale's are both solid choices too. Though everything above I'd go for first. Hope this helps!