Thought I'd drop by with a few personal favourites.
PlayStation:
- Devil May Cry 3: Special Edition (I am looking forward to the HD rendition being released by the end of this year on PSN/retail)
- Disgaea 2: Dark Hero Days (My best companion on any amount of transport and boredom killer, Asagi for the win)
- Final Fantasy VIII (More enjoyable than the boredom I experienced playing the hype machine known as VII, Squaresoft was a beast)
- Metal Gear Solid series (Can't get enough of it, one of the better stories in a game I've played)
- Tekken Tag Tournament 2 (Not released yet but will be an instant favourite of the series)
PC:
- osu! (Just had to since I actually do enjoy the game)
- Unreal Tournament (The only FPS I'd ever enjoyed)
Xbox:
- Gears of War (Was my first HD/Xbox game that I played at a mate's house, so much fun at the time)
- Ninja Gaiden 2 (Hack and slash fun with a bloody mess to boot)
I think that's about it, not too sure as I can't remember any others.