http://hotlinemiami.com
I found this game a few days ago going through the specials on Steam, having heard nothing about it or anything but it was on sale for $4.99 at the time so I said hey, why not. Turns out, it's a pretty awesome, extremely fast-paced and intense top-down shooter type. It really pulls off the 8-bit look well and the soundtrack is rad.
The game, on top of all that, is very bizarre but fun. Oh, and super gory.
Would recommend it to anyone who's thought about it, and I'm curious if anyone else has played it.
And to top it off, here's one of the tracks from the game that really captures the 80s retro feel.