Sadly a better solution already exists: my 2012 Panasonic TV connects wirelessly to my network, and my laptop can stream videos to it without having to install anything, all via DLNA:
It's a lovely idea for retrofitting to older TVs, and sharing between laptops is really neat. For anyone who's bought a TV in the last couple of years, though, the device is redundant.
(it's also apparently very easy to share content from smartphones, tablets and so on, but I haven't had the need (or a chance) to independently play with this)
http://en.wikipedia.org/wiki/Digital_Living_Network_Alliance
Here's Panasonic's page outlining such features in their TVs:
http://www.panasonic.co.uk/html/en_GB/Products/VIERA+TV/VIER...
It's a lovely idea for retrofitting to older TVs, and sharing between laptops is really neat. For anyone who's bought a TV in the last couple of years, though, the device is redundant.
(it's also apparently very easy to share content from smartphones, tablets and so on, but I haven't had the need (or a chance) to independently play with this)