Definatly check out Buckethead. He is a solo guitarist who hires drum and bass players or somtimes uses drum machines. He plays a huge variety of music from funk to alternate to country (he has some mad banjo solos). He replaced slash from guns and roses at one point but he is so much better than slash and guns and roses.
http://www.youtube.com/watch?v=adV8-_hgL4g&tracker=False
http://www.youtube.com/watch?v=OTcg9JybEp8&tracker=False
http://www.youtube.com/watch?v=iyKpoh1YHew&tracker=False
http://www.youtube.com/watch?v=FPihVXbS79g&tracker=False
They are just a few of his peices. A lot of his songs are really sutbutle so listen hard.