Quite a variety:
*Super Mario 64 DS
*Super Mario Sunshine
*Super Mario Galaxy 2
*New Super Mario Bros. 2 (working towards 1,000,000 coins)
*New Super Mario Bros. U
*Mario Kart: Super Circuit (as an LP)
*Pokémon Platinum Version
*Pokémon White Version 2
*The Legend of Zelda: Link's Awakening DX
*The Legend of Zelda: The Wind Waker
*Super Smash Bros. Brawl (Subspace Emissary)
*Puddle
*10 Second Run
Yeah, I don't know how I'm keeping up with them all either. Granted, some of these playthroughs have gone over the space of many months. For example, I restarted Pokémon Platinum Version in July, intending to complete it before buying Pokémon White Version 2. That didn't work.