My pick as well.
I wish I could shake the suspicion that this thread killed Sherwood Schwartz.
We demand details!
It starts with us forming a singing group…
+1
Because I was a little girl with a pixie haircut who dreamed of long gorgeous locks, I picked Jan. I couldn’t get past Marcia’s lank stringy hair, which of course was the style then (and is today once more). I remember putting a baby blanket on my head, and securing the two sides with pony-tail holders, pretending I was Jan with my hair in dog-ears.
Poor pixie-head Ellen!
Cousin Oliver.
There’s no doubt every guy wants to do Marcia (perhaps with someone else’s personality), and all the (chicks? women? girls? what goes here?) want to be Marcia, or at least look like her and be as popular. And if I knew she was putting out for blow, I would have been out there looking for her.
Also, how did that bald midget get hooked up with her doppelganger?
Phil Packer (swinging dude from another high school, with his date.)(AKA Peter Brady)
When I voted I gave some love to little Cindy. Now that I think about it, I have to give points to Cousin oliver for being so full of Win that they were forced to cancel the show because the others couldn’t keep up. 
Watched Brady Bunch when I was 5-6 which I was guessing was Cindy’s age but thought she was the cutest girl and would imagine me with her… Never really paid attention to anyone else, lol. I guess character wise, Alice & her husband seemed the most down to earth.
Marcia is a chick you hang out and get high with, maybe bang a couple of times, but nothing serious.
Jan? It’d be short, it’d be passionate, and I’d be sick of her shit inside three months. I can see the relationship ending (for me) when I realize that I’m doing Jan just to shut… her… up.
But then you have Carol… and while she wasn’t as fresh as her two daughters, she must have been a complete tiger in the sack to convince a man to marry her and accept responsibility for four additional non-income producing mouths to feed (Carol doesn’t have a job, does she? Or was she in real estate?), but to also continue paying for the housekeeper (including room and board).
[QUOTE=JohnT]
But then you have Carol… and while she wasn’t as fresh as her two daughters, she must have been a complete tiger in the sack to convince a man to marry her and accept responsibility for four additional non-income producing mouths to feed (Carol doesn’t have a job, does she? Or was she in real estate?), but to also continue paying for the housekeeper (including room and board).
[/QUOTE]
I always figured Carol’s husband was in the mob, maybe one of Mickey Cohen’s old lieutenants who was whacked for skimming smack from Mexico. Cohen and Johnny Stompanato both had big things for blondes. This theory would explain why money was never a problem, she didn’t mind the girls not going by their birth surname, and nobody from their father’s family even seemed to exist.
Johnny Stomp died three years before Cindy was born, so he’s out of the picture.
Mickey Cohen and Florence works otherwise. Can anyone remember a gap in her appearances on Mike Douglas that would align with her being pregnant? 
RuPaul.
I guess I’m a prude, but learning Marcia was fucking to score coke kinda ruined a whole bunch of teen fantasies for me.
As the middle of 3 boys, I related to Peter, and for such a silly show it was pretty remarkable how right they got that.
But, the word “favorite” is open to many different interpretations, and I chose as such the one who got my prepubescent boy’s blood flowing for reasons I didn’t yet fully understand.
Marcia, Marcia, Marcia, indeed.
You can’t go home again. . .
But the answer is clear. It’s obviously Alice.
I always thought that Marcia was hot, so I voted for her as my favorite.
But Jan was nice-looking, too!
Cindy. I watched the show when it first went into syndication/reruns (mid '70s), so though Susan Olsen is ~5 years older than me, by the time I was watching the show I was the same age she had been when the shows were filmed, and I had a big crush on her.