I really like NetBSD. It has a clean design and it was the first Unix-like OS that I really picked up on, right around the v1.5 - v1.6 releases (2001 to 2002).
I haven't been able to run it much since then due to owning incompatible hardware, but after seeing how well it runs in emulation, I am considering recycling some PC hardware and running it on top of Microsoft's free Hyper-V Server 2012. The only problem is that Hyper-V Server doesn't support wireless networking and where I want to put it isn't anywhere near a router, so I am unsure how to handle networking.
I haven't been able to run it much since then due to owning incompatible hardware, but after seeing how well it runs in emulation, I am considering recycling some PC hardware and running it on top of Microsoft's free Hyper-V Server 2012. The only problem is that Hyper-V Server doesn't support wireless networking and where I want to put it isn't anywhere near a router, so I am unsure how to handle networking.