Opeth were good. Mikael Åkerfeldt, the vocalist and front-man, has a very self-deprecating sense of humour, describing their music as "cock rock" ("Notice how our hair just gets bigger as the set goes on?"), commenting on how they'd descended to become a sing-along band... then make the above comment. For how many metal bands is it at all notable that a song is in 4/4 time, or that the whole thing is in the same time signature?
There was a good selection of songs from most of the more recent albums, but nothing from Orchid or Morningrise. I think the highlight for me was "Drapery Falls", which is a beautiful mix of the melodic complex instrumentals and thrashing rock, and one of the best songs off Blackwater Park, (ah-ha... there's what I'm assuming is a legit MP3 of Drapery Falls here if you're curious). Other than that, they played an enjoyable mix of their slower more instrumental pieces ("this one is another ballad, we like playing ballads to pick up chicks"), and their heavier tracks, inevitably including "Demon of the Fall", which is just pure metal.
Support was from Extol, a christian technical death metal band (don't you love subgenres?). They sounded a bit like Fear Factory, but with a guitarist who wanted to be in a bluesy hard-rock band. They sounded pretty good, and the god bits get lost in the growling vocals. I do wonder what they make of Opeth's comments about Satan though :-)