I really like progressive music. My all-time favourite band is Dream Theater, closely followed by Liquid Tension Experiment, which includes John Petrucci, Jordan Rudess and Mike Portnoy of Dream Theater, and Opeth.

I also love classic rock - Guns 'n' Roses, Ozzy Osbourne, Rush etc.
I also love metal, bands like In Flames, Children of Bodom, Borknagar and Hammerfall.

Then there is the odd weird band like CKY and Bloodhound gang that I like.