Joyce DeWitt

Joyce Anne DeWitt (born April 23, 1949) is an American actress and comedian known for playing Janet Wood on the ABC sitcom Three's Company from 1977 to 1984. Description above from the Wikipedia article Joyce DeWitt, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Cast

John Ritter: Being of Sound Mind and Body
Self / Peaches

Call of the Wild
Jolene

Rock Story
Judge Carol Ann Connelly

The Great Fight
Randi Toney

My Boyfriends' Dogs
Nikki

Ask Me to Dance
Nana

With This Ring
Jilly Weston

Saturday's the Place!
Hostess

Steve Martin: Comedy Is Not Pretty
Love God's Date

The Savant
Detective Randi Toney
Behind the Camera: The Unauthorized Story of 'Three's Company'
Herself - Host
Spring Fling!
Linda Hayden

Night of 100 Stars
Self
The B.B. Beegle Show
Unknown

The Cheryl Ladd Special: Souvenirs
Unknown

Failing Better Now
Irene