i've had plenty of goofy doppelganger comments, but mostly i find them totally rubbish.
most people who make comments are usually just reacting to the curly hair, since most people notice hair first. thus, i have had comments about almost every curly haired actress you can think of.
when i had red hair, i would get the nicole kidman comments all the time, which i found particularly amusing since we look nothing alike, aside from our (then) red hair and complexion/eye color.
about a month ago, one guy in chat said to me that i was strikingly similar to his friend. when he showed me her photo, even i saw that resemblance. i wish i'd saved her picture for this thread, but i can't locate it. she even had the chubby/high cheekbones and curly hair.
when i wear my hair straight, i've also been compared to lauren graham a couple times.
again, not so much. : )