When I first got my Nexus 7, I ran it naked. Not because I had no other choice, but because I wasn't interested in any of the cases that were available at the time. Then, at the Big Android BBQ, I happened to see the new Active cases from Seidio ($35-45, SeidioOnline). I really liked the Active case for the Galaxy Nexus back when I reviewed it, and Seidio's offering for the Nexus 7 looks equally as protective and comes with a nifty cover/stand. Needless to say, I was intrigued.
After having used the case for the last few weeks, I have to say that I like it.