No worries George, I've been nuts for a long time. See the title of this thread...

I currently use 6.5x9cm (two different holders, three cameras), 9x12cm (Voigtländer holders, Linhof adapter, or Linhof Universal holders, or "Regular holders for 4x5" cameras), 4x5" (only regular holders, except I have a 4x5" Linhof Universal holder if I should ever need it), 5x7" (regular holders, plate holder and adapter or Linhof Universal), 13x18cm (Same Linhof Universal, regular holders, and book-style plate holders with film sheaths), 18x24cm (book-style, with film sheath), 24x30cm (book-style again) and 30x40cm (ditto).

And today I was going out to take some 4x5" B&W pictures: A freezer full of film contained every possible size except 4x5" B&W... I shot colour instead.