I just hope it's a 'seasons 1 to 6 Jack' centred movie, and not a 'seasons 7-10 Jack' one.
Hopefully they won't make him "Homer Simpson" stupid. The writers have a tendency to do that. There's joking around, and then there's making a character who should be SERIOUS at least some of the time (he is a General after all) and making him completely oblivious and foolish (case in point, beginning of Continuum).
He's the friggin' lead, he shouldn't be relegated to the role of comic relief. I prefer action star Jack, not "Homer Simpson" Jack who makes us laugh at how dumb he sounds.
You can't blame that on the writers RDA was a exec producer and could and did go off the script whenever he wanted to and he saw the show as a comedy in the first place.