This season of 24 is pretty good. It's not as intense as some of the previous seasons, but it cuts back on those really slow moments (such as most of the President Logan and first lady seasons. *Yawn.*) I think I like Season 4 the best. It's a vast hodgepodge of various things. Season 4 really has little to no downtime. It was the season I started watching 24.
And I really liked the villain. Played by the dude from the first two Mummy movies that played Imhotep. (Arnold Vosloo or something like that.)