I've got my 3rd Sirius Satellite Radio receiver on Tuesday (14NOV06), Stiletto, in short, iPod meets Satellite Radio. This thing works very awesome, it's way beter than iPod.
*Live portable reception of SIRIUS' 125 channels via satellite or terristerial repeater
*Up to 100hrs of live radio programming (2GB)
*Auto-record music from commercial free music channels
*One touch recording of up to 10hrs of live, individual songs
*Pre-schedule record of up to 6hrs at one time
*Wi-Fi network access to internet radio
*Allows bookmark and purchase favourite song
*2.2" display screen
*Enhanced media dial with six-way navigation control that puts everything at your fingertips
*Replay, pause, rewind 44 minutes of live radio show
*GameAlert - Prompts when your favorite games are being broadcast and alerts you when the scores change
*GameZone - Lists all your favorite teams in one category and lets you select a different team from each of the various sport leagues including NFL, NBA, NHL® and college sports
Basically it works better than Zune, and has more features than a typical iPod. Yes, you have to pay for monthly subscription fee for satellite radio or access to Wi-Fi, but it's really a cool tech toy to own since its feature is way beyond iPod.