Just a quick little review. I purchased a 40GB ATV1 with the sole intent of installing Leopard on it and making it my primary iTunes server (nothing else running). Setup - This was quite easy; there are a few sites out there with guides on installing Leopard on to the ATV1, but the easiest method (and what I went with) was to download images already made for the ATV1. These images have much of the unnecessary stuff removed. I did (and recommend) use CarbonCopy Cloner to make a backup of the original drive before starting off, just incase you want to go back. Then I used CarbonCopy Cloner to put the new image on the drive (I did reformat and partition to make one large drive). Usage - Takes a while to boot the first time, there is a ton of stuff to go through. I initially had it hooked directly to my TV but have switched to a headless mode of operation now. So far, everything works perfectly. I have done most of the updates (JAVA is the only thing I didn't update yet). Performance - Slow. No other way to say it, it's damn slow. It works, but it takes time to do things. Last night was my first real test of the device. Previously I had everything running via an old Windows XP laptop (Intel Celeron with 1gb of RAM). I thought it was too slow, but the ATV is slower. I had watched Avatar on the XP Laptop and had no problems; in fact, I could stream to two different sources at the same time without problems. The ATV didn't perform as well; it did hick-up twice while watching Avatar. I didn't try streaming to two different devices but I cannot see it doing very well; it already stumbled just going to ONE TV. Overall - If you only have one target device and don't mind an occasional stutter then it's a cheep server. Remote access is easy, setup was a snap, just be patient. I'm seriously consider selling it. Maybe even with Leopard on it for someone else to play with. Then maybe I'll buy an older gen MacMINI or even the new one to setup with Lion and even install Lion Server (already own it) and use that as my Mail Server and such. The ATV1 works, it does it's job, but I'm not overly impressed. I knew it would be a stretch, and I thought it would be better then the Intel Celeron Laptop; but it is no better (not really worse, just not better). It was a fun experiment, and it does save a ton of power and is very quiet; those are big plusses but the performance is quite lack luster.