I know exactly what it is. For a fact i know that nintendo has been working on a neo geo emulator for the virtual console and have secured rights to many neo geo games (from what ive heard), thats what it is i think, im so sure and would love it when it happrens.

A new porn mini game called "Sex Mii Up".

Or the biggest and best surprise of all...

 - The DS demo/download channel :)

I'd take that over everything else... 

Super Mario Galaxy cancelled :p

There's probably less than a 1% chance of it being movies or DVD playback. I just don't see that happening. A demo channel is more likely, though I also wonder how possible that would be, considering the limitations of the onboard storage capacity of the Wii.

However, maybe a demo channel for the VC games? That could work. The other two things I think are most plausible are chatrooms (perhaps utilizing the keyboard support?), or online functionality of VC games. Although that last one probably isn't very likely, either.

Demo channel i'd like, but improbable due to space shortages

I'd say the most realistic would be just a game announcement or a new random (not demo) channel

Anyways.. as someone else said, this better not be (and it probably will be) just USA

 So true!!!  I forgot all about that! 

How about a hard drive that plugs in you Wii by USB.  Size could be about 20-30 Gbs since VC games and other stuff wouldn't take up that much space. 

oh I thought this was a general surprise to the industry..

I was going to say

HALO 3 bombs would be a surprise.

My guess would be the announcement of the first set of VC exclusive games. Both the date and price for these games. They haven't released any yet, but we know many companys have been developeing these type of games for about a year.

They have a stock pile of 10 million Wii that you can buy direct from Nintendo for a 50% discount and free shipping?