Nah, not overhyped. Pricey but good. Dark fruit and sweet malt. Don't drink it too cold, otherwise you won't get all the complexity.
yeah, Chimay isn't overhyped at all, but it's the most widely available good belgian beer out there. There is much, much better, for not too much more, but you have to search. Westmalle tends to be somewhat easy to find, and I prefer their stuff to Chimay.
Probably my favorite that I have tried is the Konigshoeven Quadrupel. 10%, and on tap at the greatest fucking restaurant in the world:
http://refugesc.com/
the Sierra Nevada pale ale is a classic. Always a good choice when there's nothing else. They currently have a brown ale out--Tumbler--which is awesome. It used to be only available at the pub here on campus (Cal), where it is known as Brown Bear Ale. Awesome stuff. Get it while available.
Their Southern Hemisphere and Wet Hop harvest Ales that they've been running for ~2 years now are excellent as well.