One can be underrated because one is too beautiful to be taken seriously...

I think you can add NO WAY OUT to that list of films...and I'll stand in for ChiBob to repeat his plug for her performance in THIS IS MY LOVE, which is not quite a great film but is fascinating for the twisted dynamic between Darnell and Dan Duryea (which Bob wrote about in the mega-series on Duryea in the last year of my tenure with the NC e-zine).