Take photos or record videos with your webcam

Use Synaptic to search for and install cheese and you’ll be able to
turn your computer into a virtual photobooth and/or camcorder! Once
installed you’ll find the program on the Applications → Graphics menu.
Using it is simple and self-explanatory, especially if you’ve ever used
Mac OS X’s Photobooth software, which it is clearly modeled upon.
Once you’ve taken a snap, right-click it and select Save As to write it
to the hard disk.