Publisher's description of ManyCam Virtual Webcam
From ManyCam:
Manycam allows you to use your Webcam with multiple programs at the same time. Broadcast your Webcam video simultaneously on MSN Messenger, Yahoo, Skype, AIM, PalTalk, and CamFrog. Manycam also lets you to add cool live computer generated special effects and graphics to your video. Make it appear as if your face or hand is on fire with our "fire" effect. Pretend you are underwater, or make it look as if it's snowing inside your house. Add text, graphics, or your country's flag to your video window.
Version 2.3.21 adds rotation of your video source, new blank color sources, zoom your video; playing videos now shows the elapsed and total time.