13 Fingers is track nine off of Acid Bath's 2nd album Paegan Terrorism Tactics.
I just found this video courtesy www.kotaku.com through a link on www.n4g.com
This is simply amazing. I guess the video's been around but it's certainly new to me. Apparently it's also an ad for Metal Gear AC!D Mobile. I dunno. Either way, it's great and should be viewed by all Metal Gear Solid fans. It should be viewed by anybody that has an appreciation for MGS4, for that matter.
*EDIT*
Apparently you can't have embedded videos on Gamespot blahgs. So here's a link to aforementioned video. I think you'll get a kick out of it. I certainly did.