Okay, here are the games that I know are missing from the US release list:

AMF Bowling 2004
Area 51
Bad Boys: Miami Takedown
Cabela's Deer Hunt: 2005 Season
Close Combat: First To Fight
Digimon Rumble Arena 2
Doom 3
Lego Star Wars
Midnight Club 3: DUB Edition
NCAA Football 2005/Top Spin Combo
Obscure
Outlaw Golf/SeaBlade Combo
Psychonauts
Rapala Pro Fishing
Robocop
Scooby-Doo! Mystery Mayhem
Spy Vs. Spy
Star Wars: Episode III: Revenge Of The Sith
Strike Force Bowling
Tennis Masters Series 2003
Tom And Jerry: War Of The Whiskers
TriggerMan
UEFA Euro 2004 (This is definitely a US release, the comments in the other Xbox thread are erroneous)
Virtual Pool: Tournament Edition
WTA Tour Tennis
WWE Wrestlemania 21: Become A Legend

There was only one game that I saw that needed to be removed:

Slam Tennis

Here are some Collector/Limited Editions that maybe should be added:

Doom 3: Limited Collector's Edition
Halo 2: Limited Collector's Edition
Jade Empire: Limited Edition
Mech Assault 2: Lone Wolf: Limited Edition
Robotech Battlecry: Collector's Edition
Tom Clancy's Splinter Cell: Chaos Theory: Limited Collector's Edition

There is also a collector's edition for Batman: Rise Of Sin Tzu, but I don't know the official name for it.

Games that I would change the names of:

Ford Mustang Racing --> Ford Mustang: The Legend Lives
explanation: Nowhere on the box art is this game called Ford Mustang Racing

WWE Raw --> WWF Raw
explanation: This game was originally released as WWF Raw

I hope this was helpful in making the Xbox list as accurate as can be.

And on a completely different note:

I noticed that Dolphin's Dream was listed as Rumor Mill for the PS1. I own the Japanese version of this game so it does indeed exist. I can provide pictures if need be.