This season premiere was incredible! I may be over-excited about it, but I completely loved it!! The one thing that was weird was having a clip in the "Last time in Eureka" part that didn't actually happen last time. In it, Tess broke up with Jack via hologram from Australia. Then the show begins with the town celebrating Founder's Day. Zane surprises Jo with asking her to marry him, too. After seeing Kevin again and him working on a machine, Jack is jogging and suddenly ends up in 1947. Eventually we see Jo, Fargo, Henry, and Alison as well. It was awesome not having the typical time-traveling story from what happened in the episode. Here, though, they meet up with one of the founders, Dr. Grant (played by James Callis, "Gaius Balter" on BSG). He helps them get back, but like I said, it wasn't your typical time-traveling story. When they are back, they notice one big change on Main Street and quickly go to see what else has changed.
Jo: She sees Zane in jail (he was in it at the beginning of the ep.) and Jo tells him yes, she'll marry him. Zane tells her, "Marry you? In what universe?"
Alison: Gets home to see nothing different at first. She still has Kevin and Jenna, but Kevin isn't Autistic....
Henry: Gets back to his garage to see someone from earlier in the show, a woman who was fixing a car and dressed in the same duds as him. She leaves, gives him a wedding ring, kisses him and says, "See you at home."
Jack: Gets back home, S.A.R.A.H. is still the voice of the house and Zoe is still attending Harvard. But to his surprise.... he's back together with Tess!!
The episode ends with Dr. Grant from 1947 being back with them in 2010, as when he was helping the others, he secretly took something to go to the future as well. He appears in Cafe Diem asking for Alison.
We don't see the change with Fargo until the preview for episode 2. He's in charge of G.D.! Next week they'll see that they messed up the timeline and have to fix it. This is going to be a great season. I think the "time-traveling/space time continuum" arc might be wrapped up next week, but I hope it can go a little longer. It's interesting to see how they live in this version of Eureka.