She played KACL station manager Kate Costas in five episodes of Frasier, and had a major role in the made-for-TV film All-American Girl: The Mary Kay Letourneau Story.

She's the Boss: Directed by Philip Charles MacKenzie. With Kelsey Grammer, Jane Leeves, David Hyde Pierce, Peri Gilpin. Kate Costas takes over as KACL's station manager; when Frasier angrily rejects her suggestions to improve his show, she banishes him to …

Kate Costas is a recurring character in Season 3 of Frasier, portrayed by Mercedes Ruehl. Kate becomes the new station manager of KACL in She's The Boss and quickly makes her presence felt.

Frasier and Kate have a love–hate relationship, finding themselves on opposite sides of programming decisions and union negotiations. They have a brief affair before Kate leaves to accept a management position at a Chicago station in "The Adventures of Bad Boy and Dirty Girl".

New KACL station manager Kate Costas (Mercedes Ruehl) has a reputation for being a fearsome perfectionist, and inspiring fear in her subordinates. Frasier refuses her demands to sensationalize his show (such as themed shows and giving priority to "juicier calls").

Frasier (TV Series 1993–2004) Mercedes Ruehl as Kate Costas

She's The Boss is the premiere of Season 3 of Frasier. OSCAR-WINNER MERCEDES RUEHL GUEST-STARS – Frasier holds his ground when the new station manager, Kate Costas (Oscar and Tony winner Mercedes Ruehl), orders him to make changes in the show which she could use for promotion purposes.

Leapin' Lizards: Directed by Philip Charles MacKenzie. With Kelsey Grammer, Jane Leeves, David Hyde Pierce, Peri Gilpin. Bulldog, with Kate's encouragement, plays a series of practical jokes on Frasier. Frasier tries to retaliate, but his first and last attempt sends Kate to the emergency room.

Dec 22, 1995 · As Kate Costas, boss of Seattle radio psychiatrist Dr. Frasier Crane, Ruehl’s character Kate was very intelligent, cultured, talented, aggressive, blunt, irritating, undemonstrative and...

Mercedes Ruehl is an American actor. Ruehl portrays Kate Costas in Season 3 of Frasier.