Pentax 330RS (getting old, but still works well and fits easily in a pocket)
Minolta X-370 with a Minolta 28 mm, a 50mm, a Vivitar 70-210, winder and other little bits . . .
Pentax ME - Like a brick, used for snowboarding / hiking and preventing cars from rolling down hills.
Kodak Kodamatic No.1 Folder (620) from 1938. Kind of fun, but not so useful since I have to roll my own film.
Some homebuilt pinhole cameras.
Edit: Sorry all, I seem to have missed the point - and have no digital video camera - just an old 8mm Sony movie camera that doesn't see much use.