Carter is certainly much smarter than how she acted in this episode. How does she go from "Don't open the red door as it was dangerous" to giving up on the other door then going back to the red door? Also when McKay was swinging the rope, shouldn't Carter and Keller have been standing to the sides rather than right in front of him? Good thing at least they were staring at him and not the ceiling otherwise it would've been a gory end for Carter. Also is it just me or did Carter have a 'Xena like' moment when she successfully tossed the hook up twice.
Also it seemed all of a sudden they just trashed Zelinka or implied it by Keller referring to his "sniffing her hair" and Carter, as McKay inferred, resented being stuck with Zelinka in the transporter room for 3 hrs.
Finally, the only thing that saved this episode was McKay didn't go drooling over the thought of being with Sam for an extended moment of time. And actually had more of a 'ship' with Keller. [I know it wasn't a real 'ship' and just a drink, but saying at least between Carter and Keller, McKay went with Keller.] So thankfully McKay isn't like he was in SG-1 being totally in love with Sam for her physical atributes. Though the scene where he asked Sam to show her boobs to the kids was absolutely hilarious