use the force
DFTS12. Here's a very effective idea borrowed from my favorite Swede once again. This is a technique I heard used in "Rising Force" from Yngwie Malmsteen's Odyssey disc. Go get it, if you don't have it already. Anyway, it's a combination of sweep picking and legato technique with a bit of pivot/pedal tone action. Once you get the idea down, it's fairly easy to develop somewhat difficult sounding lines, without too much effort.