I'm a huge fan, and I think season 1 is the best.
As for Dan and Rick, the terrorists weren't exactly going to march in Jack's house and kidnap Kim, they needed to lure her out. Why they didn't kill them both immediately after getting Kim, I'm not sure.
The guy driving her around was probably making sure it didn't get screwed up, like when Kim's friend ended up in the hospital, he could clean up the mess, so to speak.
And question number 3, I can't remember exactly what happened.
Anyway, how awesome was the scene in the limo when Jack is staring at the guy through the bulletproof glass? That was so sick.