Comment by scrame

That's funny, I recognized the name, but had to look him up and went "oh yeah, eyebrows guy!".

The kid who played Joffrey on game of thrones also always came across as a very smart, thoughtful kid, he just played an intensely hateable character. Similar to the actor who played Marlo in The Wire, I saw him host an actors roundtable and had to blink twice "wow, one of the scariest villains in a gritty show is actually this cheerful, charismatic guy.

I don't think all actors are smart, and I certainly think some actors think they are smarter than they are, but I don't think being smart hurts if you're an actor.