I suggested Rob Dougan based on Batvinks previous favourites, but here is some of the music I have lined-up in iTunes to code to, all of them very instrumental with few lyrics, to aid in not distracting me
The Crystal Method (any album, but especially Legion of boom)
The Future Sound of London (anything, especially The Isness and ISDN)
EGG - Albumen (amazing live!)
Northern Exposure 1 (John Digweed and Sasha.. haunting, brilliant)
Massive Attack - Mezzanine
Plus a mention for Chicane, Banco De Gaia and 808 State. I'd use all of them for coding
My musical tastes go much wider, but those are real coder albums.
Bite my shiny metal ass