if you take a few mins to set it up correctly you can pretty much do anything you want if you have the remote in your hand. i'm not too familiar with media centre setups but i imagine this is pretty similar from seeing pictures of MC.
it displays any info you want about your PC (cpu usage, ram, hdd, conection speed), and other stuff it can get from the internet like weather, emails, news, or winamp tracks.
the knob on the front does volume.
it has an IR sensor built in for the remote. once you install the software you can use the remote like a mouse, or use it to launch it's media centre software and get a big ass menu on the screen so u can easily browse through your stuff like pics, movies, music etc.
looks ace to