What actor/actress was in these movies?

Looks like Sean Young on the top, that's all I've got.

It is Sean Young.

The Sean Young flick is the remake of A Kiss Before Dying. The middle shot is Gary Sinse in Albino Alligator. Don't know the third shot but the answer is...
Matt Dillon





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"Film is a disease. When it infects your bloodstream it takes over as the number one hormone. It bosses the enzymes, directs the pineal gland, plays Iago to your psyche. As with heroin, the antidote to Film is more Film." - Frank Capra

Meatloaf
Roadie, The Salton Sea, and Formula 51





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Don't recognize any of these movies, so can't tell you who the common actor is

That's Breckin Meyer in the top shot...that's all I've got.

Ditto & I don’t recognize any actor.

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Fiaruza Balk
The Craft, Life in the Fast Lane, and Humbolt County



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OK, the middle shot is from St Elmo's Fire and the bottom shot is from Class, don't recognize the top shot and the only actor in common with the bottom two shots is Rob Lowe, but I thought we weren't supposed to post shots of the actor in question.

The answer is not Rob Lowe.

Heaven Help Us + St. Elmo's Fire + Class =
Andrew McCarthy





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Peter Finch, Garland & Elvis is I got

You're off to a good start...the three actors you've identified are correct.

In the Cool of the Day + The Harvey Girls + Blue Hawaii =
Angela Lansbury



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