Yes there are products which enable to broadcast any video signal (e.g. Cable Boxe, DVD, etc...) to any place in your home. That works OK for medium or low end TV only IMO as you must expect some lost in signal quality. Here are aome examples:
http://www.animatedkamasutra.com/contact.htm
http://www.crestonline.biz/product.p...a0509f1b73a2c0