I hate, no, HATE, to admit this, but for Weddings, I keep the MB Top 200 list handy in my browser. I'm not dependent on it, but I like being able to use it as something against which to check my choices (not individual choices, but over the course of the event) and to jog my memory.
No need to be ashamed to admit it. A reference list (or two) is a necessity for me since I've gone digital.
President's use teleprompters.
Comedians use cheat sheets.
Newscasters have scripts...
why can't we have something to fall back on?