Like Nathan, I only do it for sheet film. I write down the holder number, lens, fstop/ss, filter, date/time, how it was metered (I use a spot and will note what I metered off- i.e. " shadow under bush for Zone III" and what development I will use- N, +1, -1, etc. With Readyloads, I write it on the cardboard. If I'm using holders, it goes in a notebook, so I can unload it into the proper box for development. Also, like Nathan, it's more information than I probably need, although time of day has helped if I plan on returning to a location.
Sometimes I'll sketch the scene, noting the Zone placements, but not very often.