I was having a conversation with a colleague today who switched to Ubuntu a few months back and has not had to "boot into Windows since". Good deal, very much the kind of experience most people have once they start using Ubuntu. I have not yet switched to 8.10, but my experience with 8.04 has been exceptional. I still dual boot, but don't remember the last time I booted Windows.
And since I am Windows b*tching, I can't believe that Dell charges something close to $160 if you are purchasing and customizing your spanking new system and want XP instead of Vista. Because nothing says freedom of choice like having to pay extra for an older version of a software.
Not necessarily on topic, but had this link bookmarked about best free (not open source) software to try out.