
The two Brady guest actresses mentioned below have fascinated me for decades:
Teresa Warder played "Seattle Linda" in Season 1's episode called "The Undergraduate"
At the 7:10 mark, Mrs. Brady interrogates Marcia's school chum Linda thinking that she is Greg's mysterious crush. Warder (with her zombie stare and thick tongued speech) is something more apropos for a visit with The Addams Family.
I get such a kick out of Teresa as "Seattle Linda" and could listen to her strange delivery of dialogue all day. Just listen to her say: "SEE-AT-TULL" and
"Wullll, thuz one boy I like, the only problem is - he doesn't know I liiiike 'im."
This phenomenal debut by Ms. Warder on the Brady's sofa was her sole acting credit.
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Meanwhile in Season 4's episode called "Law & Disorder", Bobby is made a safety monitor and is pestered by a frantic girl to save her cat Pandora. I call her "Spazzy Jill" as in:
"Pleeease! You've Gotta Get Pandora Out For Meeeee!"
"Spazzy Jill" is played by Ms. Shawn Schepps. Shawn was discovered by a TV casting agent while she emoted at kiddie Drama Class. Her unglamorous yet effective portrayal of a frantic girl worried for her cat's safety is truly memorable.
(see her chew the scenery at the 4:10 mark)
Shawn quit acting by her 20s and later became a screenwriter (Encino Man) and writer/producer on WEEDS - where she returned to guest roles. She went to Writer's Boot Camp and sounds like a good egg (read her alumni info).