I just joined the Samsung community in Google + and there was video for rooting with just a app ....xnossomething. The s2 was in the list. I'm not trying it, of course
I haven't rooted my Nexus 7 yet, but I have had this device for couple of months and it has been great for me.
Before I make a decision to root, I wanted to make sure if Google Video or Google Wallet will still work after rooting. I vaguely remember reading that these two features might not work on the rooted device.