I would be cast as a nurse probably referred to in the script as Nurse #1 who gets to stick thermometers in Teal'c's mouth every other episode (and no lines because everyone's always talking about the plot every scene and all I do is stick themometers in Teal'c's mouth). But then there be an alien foothold situation and I'd be shot tragically and for no reason--the writers deciding to write me out because I keep staring with a slack jaw at Ben Browder and not doing what I was supposed to do, which is on cue stick a themometer Chris Judge's mouth. Mine would be a quick death because the camera man won't actually film it and goes straight to M.M. shooting the alien half a dozen times, lingers on his face a while as he watches it die miserably, then Daniel and Carter rush in, say a couple of lines, Daniel makes a face at the corpse and then the scene cuts to the tag where all ends well despite the fact Nurse #1 was tragically killed in the line of duty--with themometer in hand. My name would appear at the end credits somewhere but they get squished by scifi's ad for next week.
And that would be my experience on the stargate set. Alas, I would want to see the episode I would be in, but my sister will tape over the copy my mom will make with novella intros she likes and my dad doesn't know he has a VCR. Pity. But I will keep the thermometer as a keepsake. Actually, I'll steal it but they won't notice.
