Robert Picardo (Woolsey) is listed on IMDB as being in two upcoming episodes of SGA. LINK (http://www.imdb.com/name/nm0000585/)

Weir's behavior was actually kinda consistent with her previous interactions with Kav back in 38 Minutes; she was way out of line back then, too. Of course, so was Kav (in the "damn, he has bad timing/bad interpersonal skills" way), but Weir's statement that he was only interested in saving his own butt and promise to exile him alone on a deserted planet, because he was voicing concerns about the possible explosive destruction of the Atlantis 'gate and objecting to her abrupt dismissal of his concerns? Was such an overreaction. But then, I had such issues with 38 Minutes that I actually stopped watching the show for several weeks because of it.

But also, this kind of overreaction to dissenting scientific opinion and supposed "insubordination" is par for the course for the SGC who did, after all, send Rodney to Siberia basically because he was rude. Or was it a punishment for his theory being wrong, because that's just as bad.

In many ways, both within the show and in looking at the show creators' patterns, Kav serves a similar role for SGA that Rodney did for SG1.