With Cheese you can use your webcam to take pictures and videos. It is open source licensed under the GNU general public license and was created by Daniel G. Siegel in 2007. There are also many effects that you can apply to your videos and pictures. Since version 2.22.0 Cheese is part of the Gnome project. It is a nice little application if you have a webcam and want to share your videos and pictures with friends. Check out their website.