There are definitely some must mentions when you're making a LM documentary.
Clockman,Cracks,Slamfest,Ulterior Motives (I call it that out of sheer irony.),Blue Prints,Metropolis's deleted scenes,Lost Pilots in general (Jimmy Two-shoes,Kappa Mikey,Super Why?,Mess-o-Blues) etc,etc.
I did think about doing a real focus on Metropolis, since it's a really important film.
Also TV versions of movies with exclusive deleted scenes that weren't in the theatrical or home releases(I.E. Homeward Bound, Needful Things).