Search: shannen doherty
Why: Well, it's on my TV. This episode features an orangutan named Blanche.
Answer: Yes! For all of Season 9 (the last season - also called "Little House on the Prairie: A New Beginning" and not starring Michael Landon). She played Jenny Wilder, daughter of Royal Wilder, brother of Almanzo Wilder, husband of Laura Ingalls Wilder. I'm not sure she was real.
Interesting revelation in Melissa Gilbert’s book that Shannen had a one night stand with Melissa’s then-husband, Bo Brinkman.
At the Emmy tribute to Michael Landon, Melissa walked past Shannen at the side of the stage. Shannen tried to give her a hug and Melissa confronted her with, “I know what you did with my husband.”
She says Shannen sneered back, “I told you I wanted to be just like you.”
Source: IMDb, The Ingalls Are Better than You
The More You Know: Speaking of people who were famous in the early 90s, I think you should feast your eyes on this. How many teen celebz can you count? I see at least 5.