I agree Jack is a broken man!! When interrogating the suspect with Assad, he couldn't make himself go further, he took the terrorist's word that he didn't know anything! What he saw in his eyes wasn't that the terrorist didn't know anything, but the fear he had. It's the same kind of fear and pain Jack felt for the past 2 years with the Chinese! It took Assad to finish the questioning!!
Oh and Curtis is indeed dead. The guys at the other site pointed out that the actor's name was guest starring and not just one of the regulars He's gone from the show for good. Oh and the 24 website's episode recap states that Jack had to kill Curtis. So Curtis is gone.
The ending was phenomenal! I had a inkling that what occurred would happened, just because they were going so far outside of the city, it left it open for something to go off, without it killing the large amounts of people had it gone off in the LA area!!
Glad to see 24 fans in here, it's only the begining folks, it's going to be one hell of a ride! Oh and it'll take a while, but Jack will come back to form, no worries!!