I was with a different person everyday on classic servers long ago, and none of them really stick in my head
Once I started developing though I got to know some people better.
Tsunami
All the old zone players that still play today.
Soala
switch
Chris Vimes (2003? -> Present)
Fly, Blue, Chompy, Hikaru (2003/4 -> 2009)
Mursle (2003/4 -> Present)
Riley Firey (2003/4 -> 2006)
Ork (2004 -> 2007)
Jazz (20xx -> alwayz)
and lots of people o.o