I'm playing:
Goblin Cliche
Just a red goblin deck. And show me a decent goblin deck that ISN'T sligh, and I'll give you a cookie. I recently got a Mogg Sentry, and I am trying to squeeze him in (+2/+2 until end of turn for each spell played by an opponent). I also have 4 Skirk Prospecters so I can have a turn 2 Goblin Warchief.
Roller Coaster
A U/B deck that is based on a mana curve. It uses lots of fliers to keep beating the opponent, while countering and bouncing anything that would stand in the way.
Elves
Lots of cheap elves (most under 3 mana) that get pumped up by coat of arms, Elvish Champion, and cards like Decree of Savagery. I have a fun combo with Wirewood Symbiote and Wood Elves to get lots of forests early on.
Occupying Force
W/U solider deck. Basically a weenie soldier deck. Need more of the Daru Warchief.
Sliver me Timbers
W/U/B Sliver deck that uses Shifting Sliver to allow my other sliver to attack unopposed. Thus Brood Slivers can create more slivers. I need Synapse slivers though...
Dead Deck Playin'
Zombie deck with the mana curve from hell. Goes like this: Turn 1-Swamp and Carrion Feeder. Turn 2- Swamp Landcycle Twisted Abom. Turn 3- Swamp Natuko Husk. Turn 4- Swamp Undead Warchief. Then it either reanimates the Abom or plays ANOTHER warchief. I've had this deck get 10+ power armies at one point.
Black & White
Cleric deck that gains lots of life to pay for Unspeakable Symbol. Cards like Doubtless One, Cabal Archon, Venerable Monk, and Wall of Hope feed the symbol.