There was a time when I would have considered the show without Jack Bauer in the lead, but that time has long passed (and with the turn of Tony Almeida to the dark side, and the departure of David Palmer, among others, I struggle to imagine who would
lead the show without Jack at this point). For better or worse, the show has become about Jack. When he is done, the show is done. FOX would be insane to continue it without Kiefer Sutherland, and the show has mostly run its course at this point. I would not mind at all if season eight was the last year. The show has never been as good as the first two seasons, although it has risen to entertain me in seasons five and seven.