Looks like these guys need their own thread! Giraffe Tongue Orchestra is: William Duvall (Alice in Chains), Ben Weinman (The Dillinger Escape Plan), Brent Hinds (Mastodon), Pete Griffin (Zappa Plays Zappa), Thomas Pridgen (The Mars Volta).
I've been listening to their album, Broken Lines, for the past week or so. Supergroups typically result in inexplicably bland music, but this one seems pretty damn good so far. There is definitely a Mastodon sort of feel to a lot of the guitar parts, and it's nice to hear William Duvall spread his wings a bit since he doesn't really get to do that much with Alice in Chains. He sounds great on these songs.
The album is on Spotify for anyone interested in checking it out.