Home page: http://xvidcap.sf.net/
Simple to use, xvidcap has been around for some time now, and the good news is that development has recently had a surge of activity. Xvidcap supports a very wide range of file formats and video & audio codecs.
xvidcap is now available in the standard repositories.
Once installed xvidcap can be found on the main Ubuntu menu under Applications --> Sound & Video.
xvidcap can record the contents of any currently open window. Alternatively it can be used to record a region of the desktop.
Tips: Detach selection frame (padlock icon) then use the pipette to choose a window to record.