My preshow list is longer than most, I think, because I am the only crewmember on my show- I am the light & sound board op, and there's no run crew backstage, so my preshow also includes turning on sound equipment, sweeping & mopping the deck, prepping food, etc. I have a hard copy of the list in my book, but I got an iphone for Christmas and I've been using a to-do list app as a checklist for pre- & post- show duties, and it's been really helpful not having to carry a clipboard around while I do my presets.