The last time Nintendo announced something big, the press was introduced to Wii Music. That moment, which will forever remain etched in the collective minds of games journalists as the most hyped non-gaming moment ever may be corrected within the next 24 hours as Nintendo is prepping an event in San Francisco to announce something. While we have no idea what it is, here are the current best guesses as what the big N may announce.

• A new Nintendo DS that would feature a camera and a built-in MP3 (source: GameDaily Biz)
• Nintendo may resurrect an old-school franchise for new-school Wii play... our best guess is Kid Icarus
  
• A new pedometer that will work as part of the Wii Fit program as it monitors your daily steps (source: Kotaku)
  
• Something like a hard drive? Nintendo of America's Reggie Fils-Amie had hinted at storage option that was "better than a Wii hard drive" but failed to offer any details (source: Joystiq)
  
• Updated Wii that will arrive in 2010 or 2011?
  
• Wii Music 2 (ha ha)