Linux Mint Debian
I came across a review of Linux Mint Debian Edition recently and decided to try it out. The review is quite comprehensive as to how Mint installs, what it looks like, and the software it comes with, so I'm just going to add a few points of my own.
Linux Mint Debian Edition is based on "tested snapshots of Debian Testing", so you get more recent software than Debian Stable, but with a more stable system than Testing. Debian Testing has been frozen for months as the bugs are knocked outgoing towards the new stable version, and even before that it had been pretty stable for many months.