I like a lot of metal bands. And here you can download for free bass tabs of Rammstein, Megadeth, Slayer, Anthrax, Death, Iron Maiden, Pantera, and other metal bands from my favorites. Not complete discographies (only Metallica tabs go this way), but yet the best songs and famous bass lines.
ANTHRAX bass tabs: Got the Time
PANTERA bass tabs: Cowboys From Hell
IRON MAIDEN bass tabs: The Trooper, 2 Minutes to Midnight (in progress)