XBMC mediacenter for ubuntu.....

XBMC Media Center (formerly named Xbox Media Center) is an award winning free and open source cross-platform media player and home entertainment software .
Howto install :-
For Ubuntu 9.10 :- Open the terminal and type :
sudo add-apt-repository ppa:team-xbmc
sudo apt-get update
sudo apt-get install xbmc xbmc-standalone
sudo apt-get update
and done.
For Ubuntu 9.04 :-
Add the following key in the terminal :
sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys 9317790E
In the terminal, type :
sudo gedit /etc/apt/sources.list
and add these lines and save it .
deb http://ppa.launchpad.net/team-xbmc/ppa/ubuntu jaunty main
deb-src http://ppa.launchpad.net/team-xbmc/ppa/ubuntu jaunty main
Now run :
sudo apt-get update
sudo apt0-get install xbmc
other two media centers for ubuntu are Enna Media Center and MOOVIDA .