Transportation:


Bus 
www.egged.co.il
Egged information: National - 03 694-8888
Major Egged interurban routes and bus numbers(departing from the Central Bus Station, Jerusalem):
Tel Aviv: 405
Tel Aviv Northern rail terminal: 480
Haifa: 940
Eilat: 444
Dead Sea (Ein Feshcha, Ein Gedi, Masada): 421 or 486
Tiberias: 961
Ben Gurion Airport: 947


Train
Info: 03 577-4000


Taxi Companies (call them, and they come and pick you up for an extra 3.30 NIS.  BTW, I find it better to use the meter rather than a quoted price for most inner city travel.)
Geulah: 02 625-1222
Hapalmach: 02 679-2333
Hatayelet: 02 672-2222
Israel: 02 625-2333
King David: 02 625-2510
Malcha (mall): 02 679-4111
Online: 1 700 703 000
Rechavia: 02 625-4444
Rommema-Ramot: 02 538-5555
Bar-Ilan (great price to the airport): 02 586-6666


Minivan to the Airport: Known as a sheirut in Hebrew, you pay 62 NIS to carpool with another 9 or so individuals to the airport.  If you bring more than 2 pieces of luggage and a handbag, they might charge you a bit extra, depending on how much extra luggage you have.  They will pick you up at your door.  Call a few hours in advance.  They are usually VERY punctual.
Nesher (24 hours): 02 625-7227