Quote from Noel in Star Mitzvah
Noel: Well, well. The fox and the hound working together. How ironic. Roz: I'm just taking care of him until Frasier gets back from Boston. By the way, he left you something. Noel: He did? Roz: Yeah. [Noel opens the box which contains a black wig and a certificate of authenticity] Roz: Wow. A wig? That's cruel even for Frasier. Noel: Cruel? It's only the wig Joan Collins wore in Star Trek #28, "City on the Edge of Forever." It's probably still got her DNA in it.