I am adding a second HDTV to my home. Have a large Plasma in the Living Area and am installing another one in the Basement.
I have all my HD sources in the upstairs Equipment rack. All my sources are High Def and using HDMI connections.
Right now I am able to share my HD sources to the 1 PLasma using a 5x1 HDMI switch
which does all the routing between my HD sources.
Now I can just add a HDMI splitter
or distribution amp and connect to the output and display HD on both HDTV.
This HDMI stuff is pretty new, so the guys at the local BB, CC were not very knowlegeable about it or carried any solutions.