NetBSD & OpenBSD
As a long time Linux user, I've been meaning to try a version of BSD for a while now. I've installed them into a VM and briefly played around, but it's not the same as installing on physical hardware and having to overcome any difficulties.
I decided to try both NetBSD and OpenBSD for 6 months each to see how I get on. I've got an old Samsung N130 Netbook, which although not my daily driver, does get enough use to make this worthwhile.
As I go along I'll be posting now and then with progress; things I like about the operating systems and any issues I come across.