Well, obviously it won't be the last thing to happen, either. I believe that in the book, everyone flash-forwarded 21 years; in the television show it's only six months, which happens to be the night the program is on, and also right at the end of the television season. Something tells me that as soon as April 29 comes, and they think they have it all figured out, there will be another one. Then they'll have two more episodes to bait the hook for next season.
For a very interesting but very
Big Spoiler of the book, read:
http://en.wikipedia.org/wiki/Flashforward_(novel)
It'll be interesting to see it play out, and see how it does against some popular Thursday night competition -
Bones on Fox,
Survivor on CBS, and
30 Rock on NBC. I can only record one show & watch another; I'll have to make a decision on which one to drop (except
Survivor - which I stopped watching after Season 1). Probably both
FlashForward and
30 Rock will be available On Demand, though.
EDIT LATER: I was wrong about the 8:00 NBC lineup -
FlashForward will be up against
Community and
Parks & Recreation;
30 Rock will be on at 9:30.