I hate playing games on computer, though. That's what's kept me out of the land of PC for the longest time: I like being on the couch, with a gamepad, playing at 92" in 5.1. FWIW, I swing PS3 and Wii. So... probably nothing too universal.
You can play PC games with a PS3 controller, kb. This is one of many options.
Yeah.... I know. I've got a Mac Mini hooked up to the same system. There's a big experiential difference between drilling into the thing via VNC and having a remote that does everything you need, though. And I don't hate the UI for Sony or Nintendo, while Windows makes my teeth itch.
I simply attached my gaming PC to my computer, and got a controller for it. Best of both worlds, outside of a few exclusives I miss out on, I have access to most anything I want, and often for far less than on a console.