Super Smash Bros Melee was declared the winner of the Best Overall Game in the Nintendo Power Awards Vol 156. Nominations were shown in Vol 154. Here are the results from Super Smash Bros Melee.
Here are the nominations and results for SSBM (*categories it won; *categories it came as a runner-up):Regular Categories
*Best Overall Game
      Comments: Definitely the best game this year.
*Best Nintendo GameCube Game
      Comments: Also the best GC game this year.
*Best Overall Graphics
      Comments: Check out our Gallery page for pictures on this game.
*Best Music
      Comments: My favorites were musics from past games and settings, like the original Mario theme.
*Best Sound
      Comments: Yeah, the sounds were ok. But then we have Star Ocean: the second story (on PS One)...
*Best Sequel
      Comments: I generally don't expect sequels to be good (Majora's Mask), but we can make exceptions.
*Best Replay Value
      Comments: More exciting when you play with friends.
*Best Mini-Game
[Home Run Contest]       Comments: Umm...it was kind of fun..but best...
*Best Multiplayer Mode
      Comments: LOTS OF FUN.
*Best New Villain [Giga Bowser]
      Comments: He is enormous. Wish he was a playable character, though.
*Best New Character
[Sandbag]       Comments: A character? Poor guy got so abused.
*Best New Weapon/Item [Super Scope]
      Comments: Very fun when using it; not ver fun when you're on the other side of it.
*Best Way To Amaze Your Friends [Smash An Opponent Off The Stage]
      Comments: A meteor smash? I amaze with combos (there aren't many combos, though).
*Most Frustrating Moment [Being Eleminated By The 99th Fighter In 100-Man Melee]
      Comments: 'Frustrating' is an understatement.
*Hardest Job In All Of Gaming [Unlock Every Trophy]
      Comments: Very hard, considering you can't get them all yet. Check our news page: More Trophies?.
Online-Only Categories
*Best Nintendo GameCube Graphics
      Comments: Aw, common; this game had the greatest pics.
*Cutest Character [Young Link]
      Comments: What?! What about Peach and Zelda?
*Best Secret/Unlockable Character [Mr. Game & Watch]
      Comments: A strong and unpredictable character.
*Best Game URL [http://www.smashbros.com]
      Comments: Well, aside from this site, yeah, it's pretty good.