Well Lazarus, you're out of luck...
Another vote for old Obi-Wan,
master of the Jedi mind trick, could sense a planet being blown up half a sector away, he managed to keep his presence supressed for some forty years (without needing a planet teeming with life to mask him), getting both the Emperor and Vader to think he was dead. The more books you read the more powerful he becomes, apart from Exar Kun he also managed to keep his spirit from dissipating longer than any other Jedi out there.
I also love the way he fights in ep IV, those little arcs and tiny swipes are all you need to carve someone to pieces with a lightsaber, that way of fighting always seemed to make much more sense to me than the wild swinging it later became. A weapon with limitless penetrating power would seem to me to be one you would stab rather than slice with, especially as slicing can lead it to bouncing off another saber and into your own face.
Whatever he did in eps I to III I don't particularly care about, it was the 'crazy old wizard' he became that is the most impressive about him. For the prequels Lucas largely rewrote what was established about him in the early movies and books.
C'Baoth gets a note for being deliciously insane.
My own SW rpg jedi (named Vortigar obviously) was also modelled largely after old Obi-Wan, primarily vested with defensive skills and mind tricks.
Drugar:
There were characters like that in the books before KoTOR was released... The witches of jadajadaIdontknowwhattheplanetwascalledagain to name three.
