I haven't distro-hopped in quite awhile. I lost my taste for it.
Once I started really using Linux and BSD to do my work, I needed a stable system that had all the applications I needed with all the data in the right places and formats. Everything needs to work. All the time.
That has generally meant, for me anyway, running Debian Stable. I've used Debian Squeeze on my main "production" laptop since late 2010.
About a year before that, I spent six months running OpenBSD 4.4 as my main OS when I couldn't figure out how to get the CD drive to work in an old laptop. OpenBSD was the only system I could install from a floppy disk. I learned a whole lot in those six months and was very productive.
Since then I've pretty much stuck with Linux. Almost exclusively with Debian.
I did some FreeBSD tests. I check in on OpenBSD via live images every once in a while. But I haven't actually installed anything other than Debian over the past year and an half.