I've played guitar for 15 years and listen to a HUGE variety of music. My "favourite" changes a lot, and being from south america, you probably wouldn't know some of them.. Lately I've been on a jazz fusion kick. Lots of Mike Stern and Scott Henderson. Though I've been listening to non-guitar music mostly, mainly Maceo Parker and Herbie Hancock. Next week it may be the Ramones... who knows!
James Hetfield. Guy has a wicked right hand and is a riff master. I like his 'older' creative guitar riffs.