The kernel? Or a full-blown OS like Debian GNU/Linux? Official ports, or also unofficial ports?

If you're going for official Debian GNU/Linux ports, then no. If you mean Fedora (say you really wanna run Fedora), then no.

NetBSD isn't just a kernel; it is a full-blown, portable OS. The base system is practically the same on every port. So if you're familiar with NetBSD, the idea is that you can always run that familiar OS on another computer.