Art,
I really like the shows where Daniel died and did the accension (spelling) thing. The time travel is a bit out there, but I still can't see how they could have left their time and gone back and still be in their time. I could possibly see if they had just gone back a few years and they would have been there as the General was in that one episode where they went back. Remember noting is impossible. We have Cobras now.
Ron