Have you had a look at some of the older Frank Gambale videos? I actually won an autographed one from him at a clinic once for knowing the capital of Australia (Canberra, BTW). Scary stuff!
Not sure if it'd be considered antiquated by the younger folks at this point - they were done back in the late 80s/early 90s - but I believe his technique (an ergonomically economical thing where hitting three note triplets per string before moving onto the next one) was the basis of what Paul Gilbert and other shredmeisters based their own techniques off of back in the day. Speaking of which, some of Paul's videos were pretty terrifying too...he may have even named one of them "Terrifying Guitar" or something goofy like that.
Look also for any of Greg Howe's stuff as well. Saw him at a clinic around the same time as I saw Frank, and his ideas were also pretty cool - more of a basis in conventional pentatonic-based rock than classical or jazz fusionoid, as I remember it. He also had a pretty good way of making the more difficult concepts easier to understand, as I remember at the time...thanks to having a screaming case of ADD all my life, I have the attention span of a gnat, and anyone who has the patience to slow things down and explain in rudimentary terms gets my vote!
Lastly, Eric Johnson's first video was pretty amazing - I think it was called Total Electric Guitar. He came out with two others later that I've not seen, but that one made a huge impact on me. Not only did he go over arpeggios, but a bunch of other important stuff too, important melodic based things that break stuff up so you don't sound like you're wheedling the same technique out all the time. Not exactly what you're looking for, I know, but definitely still worth seeking out if you want to be a more well-rounded and stylistically diverse player.
