Debian Squeeze live DVD images are available - it's a great way to dip your toe into Debian waters
<b>Click:</b> "The images are all 1 GB + (except for the Rescue and Standard versions), so that's a bit of a change from the Lenny era. You'll need to use a DVD. Due to my Toshiba's hatred of CD-R but surprising love of DVD+R, I've been burning everything, including CD images, onto DVD, and it's worked quite well."