Big Picture is available for your lounge room right now, and, Steam being Steam, there's a massive week-long sale to celebrate.
Big Picture is Valve's attack on the consoles; a version of Steam optimised for HDTV, rather than your PC monitor. , it's completely out of beta now, meaning that if you haven't tried it yet, it's time to get hooked up and have a look.
Steam knows how to celebrate, so it's kicked off a week-long sale of "controller-friendly" titles to let you get a library of PC games that can be enjoyed in a couch-based environment.
There are some insane bargains to be had (like Left 4 Dead for US$4.99), so take a look at Big Picture and grab a game or two while you're at it.