i've seen a lot of oldbies go:
owl shimmy
ssmutz
merlin
wetferret
cims
shadrock
lycia
antago
dante
valder
just to name a few. i would be an oldbie if i didn't change my account name every 5 seconds.
kamuii, torankusu, alexh, daishi, and a few others. only oldbies i know of that are still around.