To be nit-pickingly precise, Bach and Starr were not yet married while making Caveman. They met while working on the film, married after it was completed, and still are.
Natassja Kinski in Cat People really did it for me.
So did Jacqueline Bisset In that white T shirt in The Deep. She had the biggest most beautiful… Eyes.
I guess I like all sizes.
I can’t believe we’re at #124 and nobody has mentioned it yet. Have the deviant 50-somethings been banned from SDMB? WTF.
Nah, we’ve banned fans of movie musicals.
She was only the second-hottest woman in that movie.
Was that the movie with Annette O’Toole naked in the swimming pool?
Were you disappointed when boobs weren’t actually that shape? 
“Cat People”?
I remember having a huge pre-teen crushes on a number of women on TV shows -
Juliet Mills, who played the Nanny in “Nanny and the Professor” a 1970s sitcom. First time I ever had one of “those” dreams.
The very cute Helen Loomis (Judy Strangis) in Room 222. As a kid, I always felt cheated if an episode of the show didn’t have her in it.
Jean Marsh, who was the host of a syndicated International Animation Festival on PBS, did it for me as well.
The first time I remember seeing a woman and feeling strange stirrings down below was way back in 1963, though, when I was only 5 years old, in yet another Sinbad movie - the German production of “Captain Sindbad” starring Guy Williams (Lost in Space, Zorro). There was a scene where beautiful young “spider women” in tights were doing acrobatics, and I remember thinking I wanted one, even if not sure what I was supposed to do with her. (Caroline Munro, years later, was also smoking hot in the Golden Adventure of Sinbad.).
Chalk me up as another Jenny Agutter fan, as well.
Jenny Agutter was really special. On the surface her looks weren’t really all that remarkable, kind of cute but with slightly irregular features. But she had a certain something that made her very sexy, appealing and memorable.
Mary Tyler Moore as Laura Petrie also. Rob and Laura were the first TV couple you could picture actually having a happy and fulfilling sex life (despite those double beds).
(Well, maybe Gomez and Morticia Addams as well. I always loved John Astin’s slightly manic performance as Gomez - he seemed like a man who loved life and his wife in equal measure.)
I had a huge crush on E.J. Peaker, a bubbly blonde actress who appeared with Bobby Morse on an ABC series called “That’s Life” (1968-1969) which was unusual (although remembered by few) as a musical which each week followed the young couple as they met, started dating, fell in love, got engaged, and got married. She showed up in a lot of sitcoms as well. It was the first time I saw a happy young couple on TV and thought I would like to meet a girl like that and get married. (Although to be honest, I felt the same way about Hawkman and Hawkgirl in the comics in the early 1960s. They were an attractive young couple who worked together and seemed to have a marriage of equals. As most other crime-fighting teams consisted of an older man and a teenage or teenage boy who was his “ward,” the healthy relationship between the Halls was a lot more comfortable…)
Paula Prentiss, the lovely brunette who starred with her real-life husband Richard Benjamin on the sadly overlooked 1960s sitcom “He and She” also fascinated me. Their relationship on the series was a lot less like the Ward and June Cleaver and seemed like a much more realistic marriage to me. Richard Benjamin was and is a lucky man.
Looks like you and I have similar taste, as I was pretty much in love with Laura Petrie (but who wasn’t?) and I liked E.J. Peaker and Paula Prentis also. I read something a few weeks ago that mentioned Richard Benjamin and that brought to mind Paula and her younger and equally pretty sister Ann. So I decided to look them up to see how they’re doing now and was shocked to find that Ann pretty much went nuts and began seriously terrorizing her family and Richard Benjamin and died in prison at the age of 70. This from Wiki:
Wow. I remember Ann as well, that was sad to hear.
Just re-watched *Westworld * a while back. Benjamin was really good in that.
I also liked the Suzanna Pleshette as Bob Newhart’s wife on his first series - another cool, smart TV couple. She was famous for flings and marriages to Hollywood leading men, I didn’t know until listening to a commentary track on the DVD of the series that she finally married Tom Poston, one of Newhart’s buddies who was a regular on the Steve Allen show and had a recurring role as Bob’s college pal “The Peeper” on that show.
Her voice was amazing as well.
Yeah, Pleshette’s marriage to Tom Poston was quite a surprise. Gives one hope, it does. 
A couple of years ago I was watching a rerun of “What’s My Line” that had Tom Poston as a panelist. He seems to have been quite an intelligent and interesting guy in real life. And of course he was very funny, a quality that always seems to resonate with the ladies.
And speaking of Suzanne Pleshette, I pretty much fell in love with her in the 1969 movie If It’s Tuesday This Must Be Belgium. Here’s a memorable scene with her and her on screen love Ian McShane, looking much different than he did in Deadwood.
Labyrinth was my first thought too, but for the other side of things…Jennifer Connelly. Either that was first or…is “Career Opportunities” the one where she rides on a mechanical horse thing in a tight white T-shirt? I can’t remember which one I saw first.
I’ve been thinking about this question for days now and have yet to be able to recall the first instance of a movie being involved in such feelings, so I’m going to go with Hedy Lamarr as Delilah in Samson and Delilah (1949) which I saw as a kid before having the physical wherewithal to be actually “horny.”
I have a more vivid memory of a character in a comic strip called Champagne (from Kerry Drake) which I even started a thread about years ago.
The only other one that keeps coming to mind to compete for first would be Laya Raki in a cheesy South Seas adventure starring Jack Hawkins called Land of Fury (1954) which I would have seen when I already knew about horniness.
Other than Hedy, I suppose the first screen goddess to generate consistent lust in me would have been Jane Russell, way more so than Marilyn.
Your post reminded of a few times when I was small when I found myself having similar odd feelings. I can’t really say I was horny because while the equipment had been constructed it was not yet operational (so to speak). The first I recall was an episode of “Flipper” of all things. I don’t remember the plot but there was an ordinary scene inside a boat cabin where a female scuba diver took off her wetsuit revealing a standard mid-60s era one-piece bathing suit underneath. For some reason I could not fathom at the time, I found myself more interested in that scene than anything else on the show.
(I feel skeevy right now.)
I LOL’d.