Windows 7 includes one awesome feature that many people were not aware of: Internet TV.
Yep, the Windows Media Center has a lot of great features: You can watch Internet TV, it has the ability to stream and record TV (basically you grab a TV tuner that you connect via USB and you can watch TV on your PC and record it) and you can also do it vice-versa. If you want to, you can also watch netflix movies through the Windows Media Center.
Although, it is still not clear who are going to be the official Windows 7 Internet TV partners, there might be services from Hulu or other media networks.
Windows 7 Internet TV
Official Video – TV Where and When you want it
But Windows 7 can even more! A feature called “Play To” may revolutionize streaming media content in home networks. What you can do might sound simple, but it’s not: You will be able to send a stream to a device in your home-network, e.g. your Zune, your XBOX or another PC. The protocol DLNA 1.5 makes it all possible.