Since it seems to be the trend, more nominations coming later!
Unown A: Art Dealer - Crazy Elf Boy
Unown B: Back - kiyone
Unown C: Champion - Negrek - For winning literally every TPMBL tournament she ever entered. I can't even remember her ever losing a battle.
Unown D: Disappeared - Mikachu Yukitatsu - Anyone who can leave the forum for a month or two and inspire an entire Miscellaneous thread discussing his absence is clearly important.
Unown E: Excitable - Houndoom_Lover
Unown F: Fanatic - Zak - For being obsessed with the Saw series. (I almost called this one "Fanatik," or something similarly stupid.)
Unown G: Gamer - Roy Karrde - For his contributions in the VG forum.
Unown H: Hangman - Shadow Wolf
Unown I: Indians Fanatic - Number1ChanseyFan
Unown J: Joker - Blademaster - Even if he's not always funny, he's always trying.
Unown K: King - Kevin
Unown L: Less Important Than Zak - Systematic Revolution
Unown M: Moody - Andrew
Unown N: National Pride - Austrian ViceMaster Alex
Unown O: Opinionated - Heald - This could have gone to a LOT of people, but I like keeping the Unown nominations diverse.
Unown P: PCG Junkie - Fett One
Unown Q: Queen - Lady Vulpix
Unown R: Revival - Jeff - From what Christen's told me elsewhere, nominations that include multiple members will be excluded from voting; as such, I'm nominating Jeff for this even though he was given a joint "Revival" nomination by Master Rudy.
Unown S: Sexy - mvtm - Considering how every time she posts in the TPM Picture Topic, several males immediately follow with compliments....
Unown T: Theatre - DragoKnight
Unown U: Underappreciated - Telume - Without his efforts, the TPM Website Revival Project would have encountered many more hurdles.
Unown V: Violent - Angel Blossom
Unown W: Writer - Gavin Luper - Anyone who gets featured in such a high-level publication as the Indigo Journal deserves an Unown, as far as I'm concerned.
Unown X: Ex-Mod - Master Rudy - Mostly because he reminds everyone quite frequently... as in, every time we see his sig.
Unown Y: Yu-Gi-Oh! - Dark Sage - Well, it does seem to be his primary interest on the forums.
Unown Z: Zing - RedStarWarrior - It's an apt description of many of his posts.
Unown !: Too Many Posts! - Ash_300
Unown ?: Puzzling - Charles Legend - Sometimes... yeah.
EDIT: 28 awards, 28 different nominees. Splendid!