Cheese is a very good Utility for the GNOME Desktop which used for take photos, videos, and anything else you can think of with your webcam.
Just start it up and shoot! Gather all of your friends around, have some fun! Cheese uses GStreamer to apply fancy effects to photos and videos. It also allows you to take videos. Effects, sharing.
How to install in Ubuntu
open a terminal
$sudo apt-get install cheese ( or use synaptic package Manager)