I was expert-tier at only one online FPS in my life, and that was Quake 3 Arena on the Dreamcast. Haven't been able to match my success in that game in aything since, though I'm not bad at Halo or CoD.
King of mario kart DS here, back in 08 I used to play for 2-3 hours each night never losing a single match, but I did lose to a certain player, yo was mad skilled! I ran a toad with the mushroom kart, my emblem was a black nacked toadette, and my name was sychu. My best tracks where delphino plaza and rainbow road. I no longer play mario kart ds.