[SpikE]

centerstage mac (free)
http://centerstageproject.com/

itheater mac (free)
http://www.itheaterproject.com/

MediaCentral mac (commercial)
http://www.equinux.com/us/products/m...ral/index.html

OSXBMC mac (free) port of xbmc to mac
http://www.osxbmc.com/