I was talking with a friend of mine at a coffee shop yesterday on the relative merits of Plan 9, not the one with cheap special effects but the OS with lots of cool new ideas. New being used in a relative sense as we are very much noobies to the OS.
Its been a while since we both felt the initial high on encountering a brand new OS. Plan 9 being very similar to Unix and Linux and being based on a lot of similar ideas yet seems very different at the same time, requiring you to learn things all over again. I haven't been RTFMing as much as I would like to, and probably would get the time in the coming days to do so, and I can't wait to settle down to an all nighter of Plan 9.