Marilyn's best performance
Some Like It Hot (1959)
It's probably Monroe's finest film, and certainly one of the greatest comedies ever made, but director Billy Wilder remembered Marilyn being hell to deal with during the shoot.
She played Sugar Kowalski, the love interest of two musicians (Tony Curtis and Jack Lemmon) on the run from the Chicago mob. Her truculence and unreliability infuriated Wilder, but he later described her as an "absolute genius as a comic actress".
And her worst
Let's Make Love (1960)
In this creaky comedy from George Cukor, Marilyn co-starred for the first and last time with French singer and actor Yves Montand. He played a playboy millionaire, she an off-Broadway hoofer with whom he falls in love.
Monroe made a decent stab at singing 'My Heart Belongs to Daddy', but otherwise looked lost and tired in this muddled film. It later emerged she hadn't wanted to do it at all. Matters were only complicated by an affair she and Montand were engaged in at the time.