It might not be really fair to feature my own application. However, I have been thinking that it is worth to mention this application in the Featured Freeware section. Why? Because all the screenshots at this site (S60Tips.com) are taken using this application. Besides that, the new version has just been released.
What does Screenshot for Symbian OS (S60) do? As the name implies, it is used to capture screenshots on your S60 phones. Currently it supports almost all S60 phones, including Nokia N-Series and E-Series, but except Nokia N92 .
Capturing the screenshot can be done by pressing a shortcut. By the default, the shortcut is Edit+OK keys. The Edit key is sometimes called Pencil key or ABC key. On Nokia E61, it is the Shift key. The OK key is the center of the joystick.

Compatible devices: S60 1st, 2nd, 3rd Edition, Nokia Nseries, Nokia Eseries.
Update (27-Feb-07): Screenshot for Symbian is officially launched as an open source project.