Man Crush : When a straight man has a "crush" on another man, not sexual but kind of idolizing him.
Many straight men end up having man crushes on Johnny Depp (I don't blame them).
Classic example: Barry Piser has a man crush on Gary Cohn, a newspaper reporter who has mad Pulitzer-Prize-winner-skills and the ability to talk sports. And I must mention the crush is/was mutual.
Important note: This, in fact, means that females do not have man crushes.