At various times I have been told I look like:
Mikhail Barishnikov (from the neck up, I imagine)
Christian Slater
Hugh Grant (my brother has a much stronger resemblance to Hugh)
Edward Norton. This is probably the closest at this time in my life, but it still isn’t all that close, IMHO.
My other brother has a startling resemblance to Leonardo DeCaprio.
Robin Wright as Buttercup. All through highschool and occasionally now when I wear my hair down (not often.)
People have tolded me numerous times I look lie George W…I insist that I do not.
When I had hair, I was told that I looked like a young Tom Cruise. Now that I shave my head and have a goatee, I’ve been told that I look like Andre Agassi.
I’ve been told I look like Neil Patrick Harris in his Doogie Howser days.
Carrie Ann Moss. When I get out of the shower, with my hair slicked back and straight, I look like her in The Matrix; when my hair has dried and gone back to its natural curly state, I’m her in Memento.
Yup. Dat’s my story, and I’m stickin’ to it. So…how YOU doin’, hot stuff? 
I think I’ll just wait till after the Beandope, and let Tanookie and Pammipoo tell folks who I look like. I really have no idea, anyway, according to the GF.
Hi, my name’s Bruce_Daddy. Could I offer you something to drink?
Garrison Keillor. Argh.
Enrique Iglesias 
Or, more obscure, the bullfighter in Madonna’s “Take A Bow” video.
Well, for Haloween, if I can’t come up with a better costume, all I have to do is get the ol’ Star Trek: Next Gen uniform top out of the closet (it was cheaper to buy it than to rent it for three days worth of parties a few Octobers ago) and you’ve got one ready-made Johnathan-Frakes-as-Commander-William-T-Riker, except with brown eyes.
It works even better if, when I walk, I lead with my forehead and the left side of my chest. And make a pass at every woman in the room. In the interests of being “in character”, of course…
Ey-yi-yi "How YOU Doin’? " Have we met?
Kevin Smith or Jack Black, depending upon my quantity of facial hair.
I was unexpectedly approached by a young east indian man in a Barnes & Noble and told that I was really handsome, and that I looked a lot like Richard Gere.
My friend’s landlady’s boyfriend told me I looked like “That guy in A River Runs Through It.” For years now I’ve thought he meant Robert Redford, but I just checked on the IMDB and Robert Redford directed that movie. So he must have meant either Craig Sheffer (whoever that is) or Brad Pitt.
Mrs. Seng says “You don’t like like either Gere or Pitt. Thank god.”
I’ve been told by a history teacher that I look like Frank Lloyd Wright. I don’t see the resemblance, being a gangly, loose-jointed and long-haired redhead, but if she said so…
I think I look more like Percy, that one prison guard in The Green Mile, although I don’t have his glare or his temperament.
My sister looks like very much like Christina Ricci.
I have been told I look like Angie Harman in Law and Order (when I have my hair down). My hubby think so, so do my co-workers… I am not complaining 
I have been told I look like Angie Harman in Law and Order (when I have my hair down). My hubby think so, so do my co-workers… I am not complaining
Oh! And my sister look like “Amelie”!
Fiancee says a cross between Christina Ricci and Mena Suvari. I say he’s on the crack.
Beat Takeshi
Edward James Olmos
Father Guido Sarcucci
Yeah, I get all the chicks.
Although the year I dressed as Father Guido Sarducci for Halloween and met a very drunk, very lapsed Catholic girl was in interesting time:
“Father, I want to confess my sins.”
(Sticks her hand down my pants)
repeat
Go home alone.
I don’t think I look like any celebrity, but I wanted to point out a celebrity who looks startlingly like another celebrity before I forgot. In some pictures, Adrien Brody (who just won an Oscar for The Pianist) looks amazingly like k.d. lang (the country singer). I hope other people here have noticed the resemblance.