Audio: Dolby Digital 5.1 Surround audio, and it's one of the disc's highlights, frankly.

Extras:

First up is a feature-length audio commentary with director Lance Weiler, which is chock-full of indie filmmaking tips, personal anecdotes, and various little tidbits. Quality track.

Blowing Up a Car is an 8-minute look at the flick's formative framing sequence. Shooting in the House runs about the same length and focuses on the central setting. Johnny Magdic (2:40) shows off the nifty way the filmmakers got their aerial shots. S.R. Bissette is a 4-minute interview with the Swamp Thing artist/cartoonist who provided Head Trauma with some integral pieces of artwork.

You'll also find an 8-minute reel of cast interviews, a 3-minute piece on the music of Head Trauma, and trailers for Head Trauma and The Last Broadcast.