Conversation so far:
What film has Patti LuPone been in?
Among LuPone's film credits are Fighting Back, Witness, Just Looking, The Victim, Summer of Sam, Driving Miss Daisy.
Has she won any awards?
She has twice been nominated for an Emmy Award.
Who is a costar she had?
She reunited with fellow guest star Kellie Martin as her mother.

Question: In what show was that?
Self-contained rewrite: In what show was Patti LuPone reunited with Kellie Martin?