My HTPC puts a 10' Foot User Interface (10UI) on top of Windows that allows me to:
- Launch arbitary programs (like games)
- View weather forecasts from weather.com
- Listen to MP3s
- View DVDs
- View pictures through a slideshow
There are also some other plug-ins that interface to DVR software packages -- I just use a little program launcher for my Beyond TV. Even better, all this works with the same remote that I already use.
So far this is working out well. And the weather forecast (especially the RADAR picture) is very cool. I would certainly like to see more plug-ins and Internet integration (maybe a RSS viewer ?), it seems to be the best thing out there today.