Demaestro - 5:23 pm on Mar 9, 2010 (gmt 0)
I have been using Linux Mint which is 98% Ubuntu and 2% eye candy.
You can set it up to look just like OSX with a dock and everything or you can set it up to look like windows.
I LOVE LOVE LOVE it.
The only time I use windows is for my Adobe CS3 and I still do web-surfing when working from my "design" box.
The thing I love most is writing little utils in Python that make my word load so much easier to manage.