favorite guitar duos

I don't know if anyone out there knows Battles, but those guys are sick. Both guitarists often hammering notes on the guitar with one hand while playing keys or other sh*t with the other hand.
 
other than the ones mentioned,

anders nystrom and fred norrman from katatonia
the whole thing depends on there being two guitars. it works for me.

maybe even greg macintosh and aaron aedy from paradise lost.
again no real technical stuff involved, but the guitars complement each other so well.
 
Tipton and Downing for sure...

Gary Moore and Scott Gorham

Steve Vai and Tony MaCalpine

WARREN HAYNES & DEREK TRUCKS

and Steve Vai, Joe Satriani and Yngwie doing Little Wing...