I have an HTPC under my TV but all media stuff has been switched over to a RaspberryPi+OpenElec, which does most of the job perfectly.
The old Atom in the HTPC is starting to struggle with modern sites though and there is one thing that keeps it in service... Microsoft Effing Silverlight. No actually 2 things, Microsoft Effing Skype.
I considered buying a new TV, one of those Samsung spyware ones which apparently have Skype, if you're willing to pay £60 for the official USB web cam accessory. Has all the Netflix, iPlayer apps built-in as well... until Samsung get bored of providing updates for whatever TV model I bought anyway.
This does look good but the NUCs are expensive. Perfect for our meeting rooms at work perhaps.
For my use something like the Zotac Zbox Pico is about 1/3rd of the price and will be more than adequate for an always-on Skype kiosk.