I've just seen Episode 1 of Atlantis Season 4, and I am quite impressed by Jewel Staite's performance as the new chief medical officer. She is well on the level of Teryl Rothery/Janet Frasier as far as acting skills, and her character certainly has a lot of potential.
However, there were some seriously eyebrow-raising moments:
1)The micro-meteorite hitting Zelenka's leg. Okay, suppose he wouldn't lose all the air and suffocate- but wasn't his body still supposed to have taken a LOT more damage from the exposure to the cold, pressure-lacking interstellar space? I am not sure what effect such an exposure would have had on a bleeding wound (it probably wouldn't freeze instantly, the vacuum being a perfect insulator and all), but being up and around within minutes like he was just doesn't strike me as realistic.
2)Teyla is becoming way too good with technology. I suspect she will steal McKay's job eventually.
3)Did Carter grow long hair? Not that I mind or anything, but isn't it slightly out of character for her?
4)Is it just me, or does the new Midway Station look like an oversized Puddle Jumper?