I don’t know. I am such a big fan of both SG-1 and Atlantis that it is hard to pick. Teal’C, Rodney McKay, and Samantha Carter are all contenders as, of course is Daniel Jackson. Honestly, I don’t think you can beat the original team. Hell, I even really liked Jonas even though he was only around because Daniel died/ascended. Oh, and Vala. I love Vala.