Started with Tau back in mid-4th edition (since before Tau got their 4e dex. I still miss Aun Shi and Farsight's army-boost), and got into Space Wolves near the end of 4th (IIRC. I got at least two of the Battleforces). I branched into Orks soon after that (Black Reach was awesome), and I've cycled through them since. I've got a Space Sharks army mostly built (It'll get painted... eventually), and I may just start an Imperial Fists army, since I've got some models already painted that way and a bunch of Bolter marines just sitting around.
I plan on having a small Thousand Sons +Fabius Bile CSM list (Using mind-controlled Space Wolves), but haven't had the time to do anything more than get most of a defiler built.
40K Armies Played: Space Wolves, Space Sharks, Orks, Tau, eventually CSM (MSons + Bile)
Blood Bowl: Ought'Ta WAAAGH Roughriderz (Orcs), The North Spire Wendigoes (Norse) Iron-Wrath Krakens (Chaos Dwarfs, WIP), Scarlet Fliers (Dark Elves, WIP)
Heavy Gear Blitz/Arena: Peace River Defence Force, Paxton Gears in Arena
Necromunda: MacGuffin's Marauders (Van Saar)
Malifaux:Built: C.Hoffman Boxed: Rasputina, Pertitia, some extra models for both
(I'm Mike, by the way. Easier to remember than Tokkan, probably. DEFINITELY easier to pronounce)