Can anyone recommend a few in-depth music forums?

[Arkitech]

I'm without a doubt a complete music junkie, but I've found very few sites on the net with good music forums. Does anyone here know of any?

 

[Vadatajs]

Have you tried the forum at www.mikeportnoy.com? It's more of a dream theater fan site, but they are usually very open to musical discussion. Look for Cloak, he's a friend of mine.