So I was watching 24 tonight and at the end of the episode the terrorist gives Jack a phone number and says call him on a secure line. Being the movie nerd I am I realized he gave out a real number not a 555 number they always use in movies and television. So we decide to call the number and see what happens. It has a voice mail in spanish and something about "24 phone". After a little searching online I discover this a one of the 24 crew's phone number they use to put in episodes for fans to discover.
From the 24 Wiki
The 24 Fan Phone is a phone that belongs to one of the 24 crew members. It first appeared in episode 4x05, on Debbie Pendleton's phone. Viewers noticed it was a valid phone number and began calling it. Some people have been lucky enough to get through and talk to writers, producers, and even the actors from on the set. The phone is normally turned on when production begins and is turned off when it finishes, but currently callers will be directed to a full mailbox.
The phone number is (310) 597-3781, and both the number and a variation of it have made several appearances in the show.
I watched it a day late on my Tivo so I didn't get to talk to anyone but hey I still picked up on a 24 easter egg so good for me... I think it's so cool when producers throw stuff like into their shows. Good fun...