I open a command window and type TASKLIST. Hint: It's in the Start, Help and Support.
Remember that in Windows NT/2000/XP/2003, we have SERVICES as well. To see those, try TASKLIST /SVC
Bob
with windows xp, how can you list which programs are currently running

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic