Well I was an early adopter of the apple TV and tweaking it with Boxee. Now there is no official release of Boxee beta for the apple TV as of yet but some creative people out on the net have taken what is available and tweaked it to work with the apple TV.

I have to say I liked the alpha version but really love the interface of the beta version. I find it a lot more polished and user friendly. The UI really takes advantage of the resources available you get access to online content for TV shows if they are available or local content as well if you have it mapped out.

Now From the alpha to the Beta there was not an easy way to get it installed. For the initial install of Beta on the Apple TV you had to follow these instructions which involved using SSH to log into the apple TV and run several commands to install various components or with the script linked above managed to automate most of it. Which is how I got it working at first, but now the great people that work on the ATV patchstick and Launcher have managed to get it working from the launcher,  so if you have the Alpha installed on your apple TV you can upgrade the launcher and then you can update Boxee from the launcher as was done in the alpha versions.

Now this install method does not install some of the additional features such as flash or Firefox which run in the background and allow you to use some of the Apps that are designed for the Mac version that this is ported from.  you can get the additional instructions by clicking on the link if you use the Launcher method to upgrade to Beta on the apple TV.