She replaced Howard Zieff as director of Jumpin' Jack Flash (1986) despite having only a couple of "Laverne & Shirley" (1976) and "Happy Days" (1974) episodes on her directing resumé.

Played the wife of her real-life brother Garry Marshall in Hocus Pocus (1993).

Penny is an avid collector of sports memorabilia and has quite an extensive collection of baseballs, footballs and basketballs autographed by top athletes.

Ex-daughter-in-law of Carl Reiner and Estelle Reiner.

Her mother agreed to send her to University of New Mexico because she thought it was close to her home in New York.

Best remembered as "Laverne DeFazio" on "Laverne & Shirley" (1976).

Aunt of Penny Lee Hallin, Judy Hallin, Wendy S. Hallin, Lori Marshall, Kathleen Marshall and Scott Marshall.

Daughter of Anthony W. Marshall

Made a rare public appearance at the Hollywood Collectors Show in North Hollywood, California with fellow "Laverne & Shirley" (1976) castmates. There, she greeted fans and signed autographs. [October 2002]

Mother of Tracy Reiner.

Sister of Garry Marshall and Ronny Hallin.

Ex-sister-in-law of Lucas Reiner and Maud Winchester.

First female to direct a movie that grossed over 100 million dollars in the US, with Big (1988). And the first female director with 2 movies that grossed over 100 million, with A League of Their Own (1992).

She was one of 4 finalists considered for the role of Gloria Bunker/Stivic on "All in the Family" (1971). Had she won the role, she would have played opposite her real life boyfriend, and later husband (now ex-husband), Rob Reiner.