Frances Joan "Fran" Brill (born September 30, 1946) is a retired American actress and puppeteer, best known for her roles on "Sesame Street" as well as playing Sally Hayes in the Hal Ashby film "Being There" (1979) and Lily Marvin in the Frank Oz film "What About Bob?
" (1991).
Sonia Manzano (born June 12, 1950) is a semi-retired American actress, screenwriter, author, speaker and singer-songwriter.
 She is best known for playing Maria on "Sesame Street" from 1971 until her departure in 2015.
 She is also best known for providing the voice-over narration in several animated segments in the English version of the Swedish television show "Fem myror är fler än fyra elefanter".
 On Sesame Street VHS tapes and DVDs, she was the voice of "Visit Sesame Street on the web at www.sesamestreet.com."
 from 1998-2001.
Eric Jacobson (born July 25, 1970) is an American puppeteer, best known for performing the Muppet characters Miss Piggy, Fozzie Bear, Animal, and Sam the Eagle for Disney's The Muppets Studio, as well as "Sesame Street" characters Bert and Grover—all roles that he inherited from the characters' original performer, Frank Oz.
 As of 2015, Jacobson is now Caroll Spinney's understudy for Oscar the Grouch.
Frank Oz (born Frank Richard Oznowicz; born May 25, 1944) is an English-born American puppeteer, filmmaker and actor.
 His career began as a puppeteer, where he performed the Muppet characters of Miss Piggy, Fozzie Bear, Animal, and Sam Eagle in "The Muppet Show", and Cookie Monster, Bert, and Grover in "Sesame Street".
 He is also known for being the puppeteer and voice of Yoda in the "Star Wars" films.
The Adventures of Elmo in Grouchland is a 1999 American-German musical fantasy-comedy film directed by Gary Halvorson.
 It is the second theatrical feature-length film based on the popular U.S. children's series "Sesame Street", the first being "Sesame Street Presents Follow That Bird" in 1985.
 Produced by Jim Henson Pictures in association with Sesame Workshop and released by Columbia Pictures on October 1, 1999, the film co-stars Mandy Patinkin and Vanessa Williams.
 The film was shot in Wilmington, North Carolina, at EUE/Screen Gems in 1998.
 This is one of the few "Sesame Street" productions directly produced by Jim Henson Pictures.
 Alongside "Muppets from Space", this the final Muppet-themed feature film to have the involvement of Frank Oz, who retired from being a full-time puppeteer the following year.
Prairie Dawn is a fictional character, a rather mature seven-year-old Muppet girl on the children's television program "Sesame Street".
 She is similar in appearance to a character from the Anything Muppets.
 She is famous for writing school pageants (e.g., Sesame Street Little Theater) for her friends, mostly Bert and Ernie, Herry, Grover, and Cookie Monster.
 She also plays the piano during these pageants.
 She has appeared on Sesame Street since early in the show's history.
 Prairie was originally puppeteered and voiced by Fran Brill who also performed the more recently introduced character Zoe.
Roxie Marie is a female character on "Sesame Street".
 She is performed by Fran Brill.
 Roxie Marie is Biff the Hardhat's niece.
Bert is a yellow Muppet character on the long-running children's television show, "Sesame Street".
 Bert was originally performed by Frank Oz.
 Since 1997, Muppeteer Eric Jacobson has been phased in as Bert's primary performer, like Grover, although Frank Oz still performs Bert occasionally.
 Bert has also made cameo appearances within "The Muppets" franchise, including "The Muppet Show", "The Muppet Movie", and "The Muppets Take Manhattan".
Zoe is a 3-year-old, yellow-orange female monster on "Sesame Street", originally performed by Fran Brill.
 She was designed in her color to complement Elmo, who was gaining popularity at her introduction in 1993.
Grover, also known as Grover Monster, is a puppet character on the popular television show "Sesame Street".
 Self-described as lovable, cute and furry, he is a blue monster who rarely uses contractions when he speaks or sings.
 Grover was originally performed by Frank Oz from his earliest appearances.
 Eric Jacobson began performing Grover in 1998; he has performed the character regularly since 2001, although Oz still performs him occasionally but not usually.

Question: Fran Brill is best known for her roles in Sesame Street and as Lily Marvin in which Frank Oz film?
Answer: What About Bob?