Media Players Media Remotes and the HTPC
The HTPC offers a great deal of flexibility when it comes to expanding your Home Theater video library, of course to get the most from your HTPC experience you first need a computer to hook up to your big screen television.
Missing Remote has a beginners Guide to Home Theater PC (HTPC) to get you started.
Of course if you would rather not hassle building a computer for the living room you can purchase a AIO unit like the QNAP NMP-1000P Media Player. We had the opportunity to review the NMP-1000P and aside from a few "gotchas" it worked perfectly.
Lastly once you get your HTPC up and running you'll need a way to control what the computer does. A wireless keyboard and mouse seem like a logical choice; however a special built remote might be better. GlideTV has you covered with their Navigator HTPC Remote and Legit has a review posted.
If you want to see another HTPC build be sure to check out the Ninjalane Project "Building a HTPC"