yeah - it's been a while since anyone's posted in this thread, and the most recent posts are all season 4 spoilers, but anyway -
i have to say that i agree w/ Mything - this was a character development episode, and that's one of the things that i love in tv - character development - flat characters are boring, so we need some character interaction and some background. Here we got a bunch of info on Jack's past - mostly military related, but it's background - important for understanding a character's motives and such. And we see some stuff about Sam too - ie: she's not so good w/ first aid
however, the one thing that's always bothered me - why didn't she try to dial to another planet to 'test' the DHD and the gate? why did she keep trying Earth?