Well I've been playing around with ubuntu 7, feisty. I tried the server and regular versions. I'm quite impressed really - I like the ease of installing things such GIMP or Apache or the interface on the server version. It's pretty cool.
Last time i tried Linux was about 6 or 7 years ago and I've got to say it feels like its grown up and its easier to use. Either that or I've grown up and become slightly smarter.
If all my windows apps worked I could even be tempted to swap over... but I'd probably miss them too much and some i pretty much need (Visual Studio 2005 + SQL Server Dev version).
The only thing that's annoying me just now is I can't seem to get it to share a network drive. I have a back-up program that used to backup to a network drive on the old computer. It was a 2nd backup (so 3rd copy) but I liked to have it just in case. I'm sure I'll figure it out when I get some time.