STALKER, Total War, Crusader Kings, Europa Universalis, Civilization (w/ all features), Gone Home, there's countless games you can't get on console. The most interesting and unique games are by far on the PC, and not just 3 or 4 here and there, but I'm talking mountains of amazing unique games. Especially in the last few years with the rise of indie development again. Fresh and interesting stuff comes out regularly for you to check out anymore, far more often than on PSN and XBLA. The indie experience people get on consoles is a drop in the pan compared to what you get on PC. It's funny how people see great games like Journey, Braid, and Minecraft on consoles and think that's what this whole indie thing means and that's what it's all about, but the actual resurgence and swell has been on PCs and PC gaming consumers have been lapping it up and having their minds blown while console gamers are off in ignorance to all the variety and diversity going on outside their market. There's so many crazy and interesting games out there a single person can't even play them all, especially when sales come along and you can pick up so many.
I still love consoles, I'd like to get all three next gen systems eventually because they all have things I love. But PC gaming is where it's really at, that's where you'll find the largest library of games, the most diversity, and creativity. Some people don't know what they're missing, they're missing a whole lot.