Opeth is on TV. I get a TV station called FUSE and they play everything from Hip Hop to Death Metal. They had an interview with Opeth two or three weeks ago (very funny I might add - talking about Peter shitting his pants and how they were the same clothes, including underwear, for weeks and never shower) and followed it with a live song. I don't remember which song... damn my memory, but I know that it was from Blackwater Park.
I have seen Lacuna Coil, Lamb of God, Strapping Young Lad, Mushuggah, Chimera, and many more bands interviewed. They show most of this underground metal on a show, aired late night, called Uranium.