@hooligandave, we have the 40 inch 5300 model hooked up to a HTPC. It works great as a second monitor.
We also Skype weekly with our daughter in China & Hong Kong. We have an HD (must be HD for best quality and typical laptop webcams are crappy) Logitech webcam hanging from the top of the TV. Skype has matured to the point where it is an amazing tool - it feels like we are in the same room. Truly amazing. She even got to watch some of the Olympics on our TV when we turned the webcam around toward the TV since coverage in China was horrible.
A Skype feature recently made free: multiparty video conferencing. Works surprisingly well, especially on a larger monitor like this. We add in my mother from another state for excellent three-way video calls. All free!
If you have relatives or friends in another part of the world, investing in at least a 32 inch PC/laptop-connected TV/monitor for Skyping is a no brainer. Even if you never use it for anything else! It is that good.