Anxious to maintain its audience after a move to Friday night, David E. Kelley's "Boston Public" is filling up with guest stars like so many over-crowded public school classrooms. Dennis Miller was already slated to begin a multi-episode arc on Friday, Oct. 24 and he'll be joined by former "Twin Peaks" gal Sherilyn Fenn.

Fenn has signed on to do at least two episodes of the FOX drama, starting with Oct. 24 show. She will play Violet Montgomery, a sexy and eccentric woman who smashes into Scott Guber's (Anthony Heald) car and then crashes her way into his life.

The Kelley drama needs any kind of boost it can get. This past Friday (Sept. 19), the show's season premiere (and its first new episode in the Friday timeslot) finished a distant fourth in the ratings, behind even a "JAG" repeat on CBS.

Fenn, who earned a Golden Globe nomination for her performance as Audrey Horne on "Twin Peaks," has become a regular television guest star in recent years. Her cameo credits include "Friends," "Watching Ellie," "Dawson's Creek" and "Law & Order: Special Victims Unit."

The actress also appeared last season on The WB's "Gilmore Girls" and was slated to appear the show's California-set spin-off until the network pulled the plug due to the rising production costs of shooting on location in Venice Beach, California.