One of my favs is Joe Satriani duelling with phenomenal bassist Stu Hamm on a kickass version of Satch Boogie performed live in Chicago (I think...) and I'll be God Damned if I can find it now!! If you know who Stu Hamm is you can imagine this duel is outstanding! He's one of the most talented, impressive, entertaining bassists I've ever seen - a true master of his craft. Think Harlem Globetrotter meets Geddy meets Buddy Rich if that's even possible!
Whilst I keep searching for the video in question, here's some Stu to chew on.
It starts out kinda slow so you can either just be patient of skip ahead to where it starts cookin'.
http://www.youtube.com/watch?v=FbV-3W4h ... re=related
And of course there's this... It's not really dueling per se... it's more outstanding talent jamming together. Steve Morse and Rik Emmett playing Midsummer's Daydream.
http://www.youtube.com/watch?v=vh1JcI3lDxE
Speaking of Steve Morse, here's him from his Deep Purple days dueling with keyboardist Don Airey. Good Stuff!
http://www.youtube.com/watch?v=ZuTHQkMN ... re=related