I use Linux on a day-to-day basis, although it is not normally Ubuntu I used Ubuntu for a long time and find it to be a great starting place for a new Linux user.

Main computer: MacBook 6,1 with Windows and OS-X (I hate macs but it wasn't a choice)

Secondary computer: Custom tower (built 2002) with Debian.

Distros I use the most: Debian, Fedora, Ubuntu, Haiku.

I am currently working on a Linux distro from scratch.