Thanks for all your feedback, guys! It's funny, I have several friends who feel that, between a good PC and a Wii U, you're pretty much set in terms of good games. I'm still a bit attached to Xbox exclusives (mostly Halo), so right now a combo of Xbox One/Wii U has been doing the trick for me.
@BulkZerker, I see where you're coming from, but SteamBoxes don't seem to have hit the mainstream yet (I'm personally not sure if you can buy one right now). Sure, you can buy something like the Alienware Alpha for your living room, but those will run you way more than a console.