use buster keaton in the twilight of his career be an interesting choice . he may have be the most talented comedian of the silent age . this give him a chance to display those talent in a little time travel story . he get hook up with a guy living in modern time and and it become obvious that we be best leave in our own time keaton be able to do his sight gag very well . i have hear his voice before . i believe he do some of those beach party film and play some vacuous character just to earn a few buck . serling seem to have respect for him and portray him that way . it not a bad story . it show how one react when we wish for something we do not have and get that wish .