First up is Leave Her to Heaven. This is an interesting movie in that, although it's a film noir, it's also a Technicolor film noir. And the Technicolor is absolutely gorgeous and used to excellent effect. We first see this in the framing story, as star Cornel Wilde is returning to his home, the stunning "Back of the Moon". (For the record, this was actually filmed at Bass Lake, near Yosemite National Park.

Unfortunately for Wilde, however, he discovers that his new wife is insanely jealous. The new couple travel to Warm Springs in Georgia to pick up Wilde's brother (played by ubiquitous child star Darryl Hickman), and bring him to Back of the Moon.

Of course, this being a noir, we know the truth, and what's going to happen to Wilde, but the way in which the truth is revealed to the characters in the movie is still surprising.
Gene Tierney was nominated for a Best Actress Oscar, but had the misfortune of being up against Joan Crawford, who did an equally good job as Mildred Pierce, and being backed by Warner Brothers, beat out Tierney for the Oscar. (My personal opinion is that Crawford was not undeserving, but I prefer Tierney's performance.)
What's in it for the ladies? Although it's a noir, it's not the hard-boiled noir of Robert Mitchum, but rather closer to what would have been known as the "weepies" in the 1930s.
And for the guys? Why, Gene Tierney, of course. She's hot, hot, HOT! The fact that it's a great story doesn't hurt, either.