I took a film directing workshop with Jim Pasternak, and during the workshop he walked on my set, while I was nervously anticipating my first-time directing experience. Okay, that was my first try. I rolled the camera again, expecting something better for my second take, and here he comes in again!
BTW, it's the best part of the scene I shut during that day. I might post the final scene later, if I dare.
I was a bad bad director, a totally rotten one, on this set. Actors had no respect for me. I was Rodney Dangerfield of directing... Even my teacher walked on my set while I was rolling, And he did it twice...
But at least I was a very good acress in a fellow director's scene. Jim said I was stunning!