A few notes from someone who has played some of these games...
Board Game
Castle Panic - Fireside Games
Endeavor - Z-Man Games
Small World - Days of Wonder
Space Hulk - Games Workshop
Steam - Mayfair Games
Incredibly - or perhaps not so incredibly, given my current state - I've played all of the boardgames on this list. Castle Panic is the least of them by a fair way. It's okay (perhaps) for young children, but not much more than that.
Interestingly, three of these games are rereleases or rethemes: Small World was originally published as Vinci, but the job Days of Wonder has done with it is astonishing. It'd be a worthy winner. Steam is a redone Age of Steam and has a fair bit of controversy about it, due to the ongoing legal issues between Martin Wallace and Winsome Games. It's a very impressive game, though. Space Hulk is now very old-school, but the components are brilliant and the game is still solid.
Endeavour is a nice eurogame with a lot of good gameplay; it also has a superb box; the components are good but on a level below those of Small World and Space Hulk.
Honestly, of the remaining four games, I can't really guess which would win.
Roleplaying Game
Doctor Who: Adventures in Time and Space – Cubicle 7 Entertainment
Eclipse Phase – Catalyst Game Labs
FantasyCraft – Crafty Games
A Song of Ice And Fire – Green Ronin Publishing
Supernatural Roleplaying Game – Margaret Weis Productions
The only one of these I've even looked at is Doctor Who. It needs to win.
Miniatures Rules
BattleTech: Strategic Operations – Catalyst Game Labs
HAVOC: Tactical Miniatures Warfare – Voodoo Ink Publishing
Larger Than Life – Two Hour Wargames
Warhammer 40K: Planetstrike – Games Workshop
Warmachine Prime Mk II – Privateer Press
Warmachine has been getting a lot of very enthusiastic fans at my FLGS; although I'm unlikely to investigate it due to my love of BattleTech, it's done some very, very good things.
Game-Related Book
BattleTech: 25 Years of Art and Fiction – Catalyst Game Labs
The Best of All Flesh – Elder Signs Press
Cthulhu 101 – Atomic Overmind Press
Deluge – Pinacle Entertainment Group
Legend of the Five Rings: Death at Koten – Alderac Entertainment Group
That BattleTech books is very, very nice. I hope it wins.
Historical Board Game or Expansion
The Hell of Stalingrad – Clash of Arms Games
Richard III: War of the Roses – Columbia Games
Conflict of Heroes: Storms of Steel – Academy Games
D-Day at Omaha Beach – Decision Games
Unhappy King Charles – GMT Games
The only game here I don't know anything about is The Hell of Stalingrad. (Research says it's made by a small game publisher, has excellent reports of the game play, less so of the components).
Richard III is the latest in Columbia Games' set of block games; if you've played Hammer of the Scots, Richard III is similar in tone: good fun, not especially groundbreaking.
The same could be said of Conflict of Heroes: Storms of Steel, the follow-up to the previous year's Conflict of Heroes: Awakening the Bear. It doesn't quite work for me, but it has gorgeous components and good game play.
D-Day at Omaha Beach is unusual: a solo wargame (two players can play it, both taking the same side - that of the invading forces). Nice concept, and good game play.
Unhappy King Charles is the latest in a range of Card-Driven Games from GMT Games. It's another excellent game that is sitting on my shelf demanding to be played. (Unfortunately, there are several wargames sitting next to it *also* demanding to be played).
Once again, very hard to decide between these ones; I'd be happy to see any one of them win it.
Cheers!