I thought it might be interesting to glance over the forum topics started in 2008 to see which ones got the most lovin'.  In parentheses at the end are the number of replies.

In game music:
-drammatica - awesome Shimomura album?! (153)
-Rockman 9 OST announced (126)
-The Black Mages III: Predictions! (106)
-Do we ignore "gamemp3s" around here? (102)
-Metal Gear Solid 4: Guns of The Patriots Original Soundtracks (91)
-Mario Galaxy Orchestral OST (81)
-Overrated Composers (74)
-Project: The Top 500 VGM Releases of All-Time (74)
-Poll: Greatest unreleased game soundtracks? (66)
-POLL: Your favourite VGM piece? (63)
-CastleVania Order of Ecclesia Soundtrack (62)
-Now that the 128-bit era is pretty much over... (60)

In other forums:
-Mega Man 9 (141)
-Super Smash Bros. Brawl! (112)
-Castlevania: Order of Ecclesia (87)
-Chrono Trigger DS (79)
-The new Soundtrack Central (77)
-I Voted (67)
-How many current gen consoles do you have? (65)
-Metal Gear Solid Essential Collection (59)
-GTA IV - 10/10 according to ign, the best game since Ocarina of Time? (58)
-Unknown female in Resident Evil 5 (57)
-Let Me Tell You What Pisses Me Off: The Death of the CD (57)
-OMG New Suikoden Game! (56)

Nice round-up!  Surprised you missed Metal Gear Solid 4 in the Gaming forum, though.  At 177 replies, it could be the biggest one yet.

Plus, that one's gotta win the thread for most whited-out spoiler tags used. ;)

Oh boy...

Yeah, this is still going to happen...Things went from zero to 140 right when I started opening the nomination thing and I haven't had the time to really sit down with it since. Haven't forgotten about, it just went from across the street to across the horizon.

I didn't, you started that one in 2006

oh snap, a post that I started wins the day! <3 drammatica. I haven't filled out my top 8 of '08, but I'll tell you right now that drammatica won it for me.

Ramza

Ah, point taken.  Still, it didn't really take off until 2008.

Better late than never. And atleast I have still some time to manage to somehow make my list in order.