I'm hugely into art... here's a couple of my favourites...
Phil Hale- Does some amazing cover designs, but also is a fantastic portrait artist. He pretty much gets into the BP national portrait award on a yearly basis! :)
Ron Mueck. Is friends with Chris Cunningham (of Aphex twin video fame) learnt a lot of his modelling skills alongside him on feature film work. Scarily real wax sculpture stuff! O_O
Bill Viola... my favourite video artist, just absolutely stunning stuff playing around with light, colour and time.
There are literally hundreds more... maybe post them another time... :)