Off the top, it's hard not to agree with the vast majority of previous reviews: "Before I Sleep" is the best episode of Stargate: Atlantis so far. Good acting, a good script and an original story that was very engrossing. The forty-two minute episode flew by.
Sheppard figures out - somehow - that it is Dr Weir's birthday and presents her with a token to mark the occasion. Then, when patrolling through a laboratory, the Atlantis crew find a woman who has been frozen for thousands of years. The big surprise? That person is a time-travelling Dr Weir, who hails from an alternate timeline, where the Atlantis mission didn't quite happen as it did in this timeline.
Sheppard figures out - somehow - that it is Dr Weir's birthday and presents her with a token to mark the occasion. Then, when patrolling through a laboratory, the Atlantis crew find a woman who has been frozen for thousands of years. The big surprise? That person is a time-travelling Dr Weir, who hails from an alternate timeline, where the Atlantis mission didn't quite happen as it did in this timeline.