Since I'm not really sure what "Categories other people have suggested" will entail in the end, I'm appending these tentative nominations separately.
Queen of Posters: Super Caterina! or Pt Peach
Most Helpful Poster:
Best Use of Topical Image:
Best User-Created Image:
Dynamic Duo: Glorb and Ped Xing
Best Signature:
Best Custom Title: Well, no one's making lists this year, so... pending.
E for Effort:
Best Thread Revival:
Most Unique Poster: ninjap00
Most Improved:
Most Creepiest Member: Mr. Wiggles... and maybe Weegee (but in a good way).