"Where You Been, Fassbinder?" is a rather sad episode of "The Dick Van Dyke Show"...and it seems it was intended to be.
Sally is about to have a birthday and Buddy and Rob are worried that she will spend the birthday alone. She claims she has a date that night, but her co-workers suspect there any such guy. On the night of her date, the gang show up to make sure she's okay. But, she isn't.
This is a sad episode about what it's like to be a lonely middle aged woman whose prospects for marriage are faint, at best. It is good in that it focuses on character development and gives Rosemarie a nice change to act. But if you are looking for laughs you might want to skip this one.