Which linux distro do you run?

CentOS 6.

dual boot with ubuntu on the desktop, tri-boot mint xfce and xubuntu on the laptop. been on/off linux user for 10+ years but the new distros are mind boggling! building a new desktop where windows will run in a vm instead of being installed. wifey uses mandriva/win7 desk and xubuntu on her laptop. have usb based collection of 15 or so distros that changes.

CentOS6 CLI only :-) I run Mint on a desktop machine, I love mint gui.

I've been using ubuntu off and on for a year, but I hit a point where it felt like I wasn't really learning anything. I recently installed crunchbang and I've never been happier.

Ubuntu

two notebooks, two distro's: Debian and Manjaro (both with XFCE)

And I am thinking to change Debian into Fedora...

Been 100% Ubuntu - desktop, laptop, server - for about 4 or 5 years now.

Run Ubuntu on my VPSs too - I know it's probably not the perfect distribution for that, but it's what I'm comfortable with so I can get more done. I have stuck to the LTS for those though. Quite looking forward to the opportunity to upgrade them come April.

Gentoo. Good if you want complete control. Recommend Mint for those would ease of use.

Been using OpenSuse for a long time on servers.
Recently started playing around with ElementaryOS for desktop.

xubuntu