This is similar to the question of sitcom costars working together on a previous television show. But I want to know about costars who were previously seen in the same TV series but not together and were on different episodes of the same show.

I'll start us off with an example of what I mean.

Shelly Long and George Wendt were costars on Cheers.

But I remember they both guest starred once on different episodes of M.A.S.H. before then.

Ed.

I thought of another one.

Lauren Graham (Lorelei Gilmore on Gilmore Girls) and Scott Patterson (Luke Danes on Gilmore Girls) both guest starred on episodes of Seinfeld before Gilmore Girls made them famous.

Ed.