You first knew actor/actress from a role different from one they're widely known in.

I love Norman Reedus on Walking Dead, but the only time I ever recall seeing him before the show was not Boondock Saints, but a PSA ad with his then girlfriend Helena Christensen with their baby son. I vividly recall it cuz I was like so this was the guy she dated after Michael Hutchence’s death…

I first saw Spencer Grammer not on her abcfamily show Greek, but on As The World Turns when she there for half a year. Incidentally, her stint was not popular there and she was on it the same time Jennifer Landon was on (Spencer’s daddy=Kelsey and Jenn’s daddy=Michael) Jennifer won three emmy’s on her yrs on that soap but has been unemployed/never made it to the big leagues of Hollywood.

Jennifer’s leading guy on ATWT was played by Jesse Lee Sofer, who I now watch on Chicago PD. I like Jesse a whole lot, but funny how he wanted to leave ATWT cuz he thought movies was such much better, and in the end returned to TV (but luckily, a regular primetime gig)

I remember Denise Richards on Teen magazine covers and Cameron Diaz on her Seventeen covers!

One of my favorite movies is My Stepmother is an Alien. So I know Alyson Hannigan from that rather than American Pie or HIMYM.

Nah, he’s Elton from Clueless!

So glad I’m not the only one. I’m still catching people from Santa Barbara and going “wait, where do I know her from?”

I actually came out here to mention 2 others from Sports Night, which was a great show- Felicity Huffman, known to most as a Desperate Housewife, and Peter Krause, who nobody in my family seemed to recognize until Parenthood.

Almost forgot that I (shouldn’t admit that I) recognized Leo DiCaprio from Growing Pains and George Clooney from the sitcom E/R, when I saw them later in the '90’s.

Crap. Murray from Clueless. I seen it a thousand times, and I still make that mistake :o

I don’t watch many movies, so to this day, the only thing I’ve ever seen her in is an episode of Smallville, where she had a slight eating disorder.

She ate her classmates.

“Turk” is that guy from Clueless.

Josh Charles is Bryan the Weiner Man from Don’t Tell Mom The Babysitter’s Dead

To me, Michael Richards is first and foremost Stanley Spadowski from UHF.

Never got the girl? Dan charmed the ravishing Rebecca (Teri Polo) and may or may not had a fling with the not-so-shabby Bobby Bernstein (Lisa Edelstein.)

Compared to Casey and his timid approach to the romantically challenged Dana, Dan was a stud.

Another one for Hugh Laurie - first I saw Fry and Laurie, then Blackadder, and then Jeeves and Wooster. Watching House is actually really weird for me, just because my brain keeps telling me the genius with the stubble is supposed to be a moron.

No, Casey was the cute one who got the girls in spite of himself. Dan THOUGHT he was the lady-killer but he was not. That’s the way I remember it anyway. Just binge-watched the whole series about a month ago.

When I was a kid at our house Bob Denver was far more known as Maynard G. Krebs than he was as Gilligan.

I’m aging myself.:frowning:

If you only knew him from Airplane and Naked Gun, then it had to be difficult to watch his earlier dramatic work later. Even though I know it’s serious I keep waiting for the captain of the Poseidon to fart or wisecrack!

I watched Hugo Weaving as a drag queen in The Adventures of Priscilla, Queen of the Desert years before he was Agent Smith or Elrond.

I first saw Nathan Fillion as the first Private Ryan in Saving Private Ryan, and as Bill Pardy in Slither.

When this video (“the front fell off.”) went viral a few years ago, I thought “oh, that’s John Clarke from The Games,” (in which he played a character named “John Clarke”).

My favorite one is Kyle Maclachlan. To so many people (when he showed up on HIMYM) he was “that guy from Sex and The City” but a lot of us got to know him as Coop from Twin Peaks.

Jane Krakowski pops up from time to time and a lot of people just know her from 30 Rock, but for me she’ll always be from Ally McBeal.

To me, Michael Richards is first and foremost the guy on the skit show Fridays who got pissed off at Andy Kaufman for intentionally blowing a skit and then getting into a fist fight with him. (Yes, I know it was all staged. At the time, I didn’t know.)

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I first saw Nathan Fillion as the first Private Ryan in Saving Private Ryan, and as Bill Pardy in Slither.
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And to me, he’ll always be the first adult (well young adult) Joey Buchanan from One Life to Live, son of longtime heroine Vicki Lord Buchanan. (Viki’s arch-enemy Dorian seduced Joey just to spite Viki.)
When I was a young lad, my parents took me and a few of the sibs to see a “grown up” movie - Death on the Nile, adapted from the Agatha Christie whodunit. Bette Davis, Angela Lansbury, Mia Farrow and Olivia Hussey were all suspects. David Niven was the sidekick to the detective Hercule Poirot. And I associate them all with this film before anything else. (And my second Bette Davis film was Disney’s Return from Witch Mountain)

To me, Maclachlan is Paul Atreides.

I know her FROM 30 Rock, but I think her performance as Jacqueline Voorhees in “The Unbreakable Kimmy Schmidt” has replaced the former. Which is weird, since they’re awfully close to the same character.

To me, she’ll always be the “Yeah but daddy says I’m the best” girl in National Lampoon’s Vacation. Not that I was a fan of her for her two lines back then, but when I first saw her on 30 Rock, she looked so familiar that I had to look her up. Afterwards, it kept blowing my mind that she was the girl with that iconic line years ago because a) that’s cool and b) of course she is, she still looks exactly like that girl.

I probably first saw both Benedict Cumberbatch and Robert Carlyle in a British series called The Last Enemy.