Nintendo new Zelda, Zack and Wiki, and Mario Galaxy sequels.
Wii download Maniac Mansion 1 and 2, Super Mario World 2, Jurassic Park (snes)
Wiiware new Maniac Mansion game, new 2d Mario game.

PlayStation: Announce that they decided to buy back world wide Final Fantasy 13 exclusive (I know not going to happen) Final Fantasy versus game play and release date. Tales of Vesperia announced for America as well as Star Ocean 4.
PSN: more of fat Princess, Maniac Mansion games if not announced for Wii. Final Fantasy 9 download.

Microsoft to say we're getting out of the video game industry and have no games to show. just kidding don't really care what they do so whatever everyone else wants them to do is fine.

Sony:

Show off; Uncharted, Ratchet, God of War III
Some info on GT 5
Announcements of Starhawk, nothing else really needed, maybe team ICO
Final Fantasy XIII US/EU release info

M$:

Mass Effect 2!!
Project Dimitri

PSP- Nothing.

PS3- Littlebigplanet 2(Can be the PSP version ported) God of War 3, Gran Turismo 5 and EyePet.

XB360- Left 4 Dead 2, Halo ODST A new game from Microsoft

DS/DSI- Pikmin DS Mario Something DS

Wii Starfox Wii Kirby Wii Luigi's Mansion 2 and Pikmin 3

SONY
- Show off Ratchet, GT5, Heavy Rain, GoW3, Jak $ Daxter Lost Frontier, LBP PSP, motorstorm PSP and more.
- Release dates for already known first party software
- 2-3 new games announced for PS3
- 2-5 new PSP games announced
- Video store for EU and Japan
- Music Store

Nintendo
- Golden Sun 3... not because I think it will happen.... but because I want it to happen....

3rd Parties
- Kojima's next game
- DMC5 - I'm sure it will come....
- Lots of Assassin's Creed Coverage
- MOAR ACE ATTORNEY!!! - Because if they don't... Capcom will get a shitstorm from DGC
- Final Fantasy XIII Gameplay video's.
- VersusXIII Trailers
- OnLive test stations shown off.
- Stuff I can't think of right now.

Sony: Twisted Metal

Microsoft: Mistwalker + Lionhead gamezzzz

Assassins Creed 2 release date/estimation would be just fine for me.

Lost Odyssey 2 & Elderscrolls V

pl0x

I would be happy with some more info and possibly a release date for Spirit Tracks (and hopefully a trailer), something about Mario & Sonic At The Winter Olympics DS, some DSiWare and hopefully one new game from Nintendo for the DS as well. I think the chances of my first three are realistic and as for a new game, thats probably being optimistic. I would love for it to be a core game like Metroid or another Fire Emblem but would be happy with another Big brain Academy (the first was real fun) or some sort of bridge title like Mario Party 2 DS or something. As for Wii I expect Kirby Wii (if it doesn't turn up then I think i can be considered vaporware) and Pikmin 3. Expect Wii Sports resort/WMP to be pushed heavily.

New mario( no spin off), new zelda wii, new pikmin, new kid icarus, new metroid, new ip, project H.A.M.M.E.R, star wars game with WM+

I'll keep dreaming.

i will be pleased with Microsoft and Sony. Both consoles have great games coming.

The real fun starts with Nintendo, I had fun watching thier conference last year.