William Dafoe.
A few years ago when Spiderman was doing the rounds a few of my students (Russians) opined that i looked like the guy who became the Green goblin in that film. I didn't know what they were talking about (I hate Marvel films) but when I researched it was quite happy with the outcome.
Paradoxically, however, I am have been frequently described (by women) as `cute` looking (as in cuddlesome) - so I don't know how that works, as Dafoe is anything but.
I also have a doppleganger tale. About ten or more years ago I lived in Leicester and was forever being mistaken for a local folk-rock musician. (I forget the name...Nick something, I think). people would stop me in the street and chat to me, thinking I was him, and people in bars would point to me and mime guitar playing (when I shook my head they would assume I was being shy or modest!)
One day I went to see Chip Baker live in a local folk pub. He had with him a rather hot Latin American singer to accompany him. She `halloed` me - in a meaningful way after the gig - presumably taking me for the aforesaid musician! Missed a trick there..!