Which console company will have the best E3 this year in terms of games and announcements? Here are some of the expected announcements/features for each company so far (home consoles, not handhelds):

Nintendo

• Animal Crossing: City Folks
  
• Captain Rainbow
• Kid Icarus Wii
• Fatal Frame 4
• Disaster Day of Crisis
• Red Steel 2
• Conduit
• Wario Land Shake
• Spyborgs
• Deadly Creatures
• de Blob
• Madworld
  
• Fragile
• Samba de Amiago
• Wii Music
• Wii Yoga
• Sadness (?)
• Nintendogs Wii (?)
• Wii Sports 2 (?)
• First party Wiiware games (Traditional Metroid? Zelda? Mario?)
  
• New Wii Zelda (?)
• Pikmin 3 (?)
• Wii storage solution
• New colours for Wii-mote/console
• New peripherals (?)

Sony (my choice for E3 winner)

• God of War 3
• Ico 3
• Final Fantasy XIII/Vs XIII (VII remake?)
• Resistance 2
• Killzone 2
• Infamous
• Uncharted 2
• Motorstorm 2
• Afrika
• Heavy Rain
• Tekken 6
• L.A Noir
• The Agency
• Aquanauts
• Little Big Planet
• White Knight Chronicles
• The Last Guy
• Pixeljunk Eden
• Flower
• Home
• Jak and Daxter PS3 (?)
• Zone of the Enders 3 (?) or other new Kojipro game
  
• Twisted Metal PS3 (?)
• PSN Video Store
• 60/40GB replacement (?)
• New Colours (?)

Microsoft (most has already been leaked XD)

• Forza 3
• Fable 2
• Alan Wake
• Lips
• GTA IV DLC
  
• Splinter Cell Conviction
• Viva Pinata 2
• Left 4 Dead
• Too Human
• Halo Wars
• Halo Chronicles
• Bungie developed Halo game (?)
• Gears of War 2
• Banjo Kazooie 3
• 3D Dashboard
• Avatars
• Motion controller
• Geometry Wars 2
• X-Com (rumoured big announcement)
• Star Ocean 4 & other JRPGs
• New Hardware SKU, pricedrop

I'm hoping for Sony, but I can easily see it being any of the three

'Not being shown' doesn't mean there won't be a new trailer, just that there won't be any in-game gameplay demonstrations, demos, etc. I definitely expect there to be a new FF13 trailer at least.

No idea whether Kojima Productions will announce a new game, but it's possible to be developing two games at once you know.

long as I see some stuff about WKS, LBP, and team Ico's project then as far as I'm concerned E3 is over and done with.

all you can really do is pick your personal favorite, too opinion based to try and pick an objective winner.

well animal crossing is already announce to appear this e3

You've listed a lot of stuff for Sony that has been CONFIRMED TO NOT BE APPEARING AT E3

I'd say Sony based on your list, but since it lists stuff that won't be there...after deducting the stuff that definately won't be there then I'd say...

Microsoft

...Nothing special from them though really, unless that 3d dashboard gets released during E3...Prolly just an announcment for the "fall update"...

I want a Freedom Fighters 2 announcement, damnit. I´ll settle for a teaser trailer. :(

Please elaborate.

Nintendo, wooo! :)

All of them :D