The next generation is just around the corner. I don't see myself getting an Xbox One or PS4 right out of the gate. I'm slow to adapt big new products (just got my iPhone 4 this year) and I like to wait to see what software library the consoles will have once they gain some footing.
I traded away a bunch of my games to get as much credit from Amazon before the "bubble" burst with the official announcements of the newest consoles. I traded away games that I figured I could get a comparable version for my PC or were probably better on the PC anyways. Some were even favorites like X-COM (which I just bought on the Steam sale). So many games these days are cross-platform and very few are either party exclusive or even CONSOLE exclusive.
Oddly enough, many of my selections are 3rd person action/adventure games.
Shadows of the Damned (360) - A unique game which was a console exclusive.
Castlevania: Lords of Shadow (360) - Great atmosphere, console exclusive.
Bayonetta (360) - quirky, weird, console exclusive. (It's genre successor, DMC, has a good PC version).
Enslaved (360) - pretty good action/adventure with a one of a kind story.
I'm still playing Skyrim, Mortal Kombat, Injustice, and my XBLA titles. Even though I am not actively playing them I'll be keeping the 4 games mentioned above simply because they are unique to my 360.
Let me know if you guys have any other favorites that'll stay rooted in your collection.