Which actor/actress are you unable to dissociate from one of his/her role?

Even when I see Elrond in LotR, that's actually just Agent Smith in a funny costume.
- I always call him Agent Elf

Robert Downey Jr. as Tony Stark, and Daniel Craig as James Bond.
- He will always be a dude playing another dude, disguised as another dude, to me
- That's strange because even in his James Bond movies I think blond, not Bond.

I liked Bradley Cooper but after watching American Sniper I can't see his face anymore without seeing the smug visage of imperialist murder.

Seeing Wayne Knight in Jurassic Park, wondering why Newman is there
- What about 3rd Rock From The Sun? I think Newman fits in quite well there too.
  
  It was a bit odd seeing him try to defuse a bomb in Die Hard With a Vengeance.

I like how Robert Pattinson has done quite a few weird roles that Twilight isn't always the first thing I think of with him lol

The entire cast of It's Always Sunny in Philadelphia. Danny Devito may have decades of work under his belt, but he'll always be Frank Reynolds to me.
That Blackberry movie that Glenn Howerton was in was decent, but I could not take Bald Dennis seriously.

Adult Danielle Radcliffe I don't really think "that's Harry Potter". Probably because the beard.
Wesley snipes is blade though.
- “There’s only one Blade. Only ever gonna be one Blade.”

Kevin Spacey will always be Kevin Spacey. I can't watch him act and see anything else but Kevin Spacey.
- Personally, i can't dissociate him from Frank Underwood.

Christian Bale, Patrick Bateman.
- For me, he'll always be Bruce Wayne.
- after watching american psycho you start expecting christian bale to start saying some weird shit or murdering people horribly in any movie hes in

RDJ just is iron man at this point. I saw him in Oppenheimer and was genuinely distracted by it.

Tom Cruise is just Tom Cruise to me, I never feel like he disappears into any kind of role - he's just Tom Cruise pretending to be someone else who happens to look and act similarly to Tom Cruise.
With one exception, that being Les Grossman from Tropic Thunder 😆
- Magnolia is probably his best performance, but hard to say how much of that is him disappearing into the role versus the role giving us a peek behind the mask lol
- The same for me, but with Leonardo DiCaprio. I can never see him disappear into a role for some reason.

Linda Cardinelli is always Lindsay Weir.
- That whole cast really
  
  Yeah, Seth Rogan, too. Jason Segel has broken that mold, though, at least to me. And so has James Franco.

A lot, but ones that stand up mostly (except few Polish ones which i won't mention because you wouldn't recognize them anyway) are Sean Connery as Marko Ramius, Patrick Stewart as Jean-Luc Picard and Tom Cruise as piece of wood.

Heath Ledger will always be the Joker.
- I think you mean Sir Ulrich von Lichtenstein
  
  He's blond! He's pissed! He'll see you in the lists!

Mr. T will always be Mr. T from the A-Team to me.
- The character is "b. a. baracus" lol but I get what you mean.
  
  Damm I forgot. Thanks for reminding me.

I can't hear Richard Horvitz without thinking of Invader Zim. He does a ton of random voices in the more recent Ratchet and Clank games and it's very distracting.