I installed remote potato and been using it for a week or so. So far, the kids really like it a lot more than Orb. It does the simple things Orb doesn't do well like pause, rewind, fastforward but it is a resource hog! I'll see 90+ CPU utilization when streaming a mkv file from my fileserver which has a AMD Phenom II X4 975 Black Edition CPU with 16 GB of RAM. I also like the fact that I control the software, hardware and bandwidth.
Remote Potato is a very good solution to stream your home content to the web. Easy to setup. Simple to use.
PS. I've only been able to get the enhanced Silverlight streaming to work. For me, not a big deal. Also, I don't have TV setup. Using it to streaming videos.