First off, I do love a good old process map, And to be fair I don't care if its not technically perfect since I put them together to help my team understand (and me too) rules and decision flows. I like to do a WB mapping form time to time with users as its great to see the penny drop for them where their vision of a new and improved process has holes. Then of course its time to help them through it.
My memory failings always come around when I'm asked to present all my findings (for the waterfall types) - I'm so used to using a board\post-its and just talking about it. I end up spending ages looking for the best template or format.