It figures. I try to throw a curveball in our often actress-centric blogging by choosing a guy's guy movie, a buddy Western for Hit Me With Your Best Shot and the most frequent face that pops up in your choices is the momentary it girl of the late 60s Katharine Ross. In Butch Cassidy and the Sundance Kid (1969) she plays the school teacher Etta Place, essentially "the girl" of the narrative (and not much more complex a role than that) and twice over, too, since she's shacked up with The Sundance Kid (Robert Redford) but also in 'what if?' love with Butch Cassidy (Paul Newman) as evidenced in the Oscar-winning "Raindrops Keep Fallin On My Head" interlude early in the film. Redford & Newman? Lucky girl.
Which leads me to this very scientific poll for TFE readers (as suggested by forever1267 in the comments). Butch and Sundance are a pair in the movie but unlike Katharine Ross you can only have one. Make your choice based on '69 only!
Now that that's out of our systems, let's choose a best shot. And good God (God = Conrad L Hall) there was much to choose from)