I was an avid AmigaOS user in the early 90s, but my Amiga has been collecting dust in the attic for the last 15 years or so. But its fun to see that AmigaOS is not quite dead yet. AmigaOS 4.1 is available from http://www.amigaos.net/, and Hyperion seems to be putting out updates on a fairly regular basis.
But it is sad to see that Hyperion doesn't realize that for desktop computing, x86 is the only relevant hardware platform today. As long as they limit themselves to PowerPC, they will never reach other users than the old hardcore Amiga fans from the 90s -- I will simply not purchase a separate piece of pretty expensive hardware from some obscure online store in Germany for my already crowded desk just to be able to run an OS which was cool 20 years ago.