Tenacious D -

Anyone who's seen a Tenacious D video on MTV or Kerrang will have recognised (once they've stopped laughing) the face of comedian and sometime movie star Jack Black as frontman of the group, supported by pal Kyle Gass. The welcome surprise is that they can actually play (Black's semi-falsetto voice is superb), and any rock fans looking for good melodies and great lyrics could do a lot worse.