Watch Live TV - WWiTV

wwiTV lets you watch 1000+ free Internet TV stations on your PC. It allows the viewer to watch TV without having to experience the annoyances of a Web site (like slow-loading pages and pop-up ads). No additional equipment required. wwiTV support both Windows Media and Real Video. You can play most of stream formats in one program. It can set the screen window to any size that you want. It supports full-screen mode too.
http://wwitv.com/

 Others of this kind worth a look are:
www.tvchannelsfree.com/

www.myeasytv.com/