Chris Rock in Dogma:
Bethany: Wait a minute. Christ. You know Christ?
Rufus: Knew him? Shit, nigga owes me 12 bucks!
Good One! His part alone in that movie made it worth watching to me!
Thread-relevant because his little screen time in Wings of Desire is IMO the most memorable part of the film.
I think Rock has too much screen-time in Dogma to qualify.
I’m too lazy to look up the actress, and she didn’t steal the film, but the film is Serenity and she’s the companion character. “And that’s not incense!”
Come to think of it, the scientist character who appears only in hologram gives a damn good performance too.
Maybe a bit of a stretch, but a buddy and I were talking about this movie today for some reason.
Euro Trip. I’d nominate both Matt Damon (‘Scotty Doesn’t Know…’) and Fred Armisen as the Creepy Italian Guy.
My favorite is the scene when the prisoners are in group therapy:
Whiny-ass therapist (turning to a big muscular prisoner): “So, you say you feel trapped?”
BMP: “Huh?”
WAT: “Why do you say you feel trapped in a man’s body?”
BMP: “Well, sometimes I get the menstrual cramps real hard.”
I don’t think it stole the movie, but I die laughing every time.
Morena Baccarin, and she’s Inara, one of the main characters of the movie.
For me the most memorable part of that film was fantasizing that I was a fox chewing off my own leg, because if I chewed it off, maybe I could escape.
Speaking of another universally loved movie that I loathed involving foxes: Fantastic Mr. Fox was all-around awful, except for that awesome banjo-picking scene in the middle. Does that count?
I nominate the teamster from Dances With Wolves.
Watch Matthew McConaughey’s reaction in the background 
And if we are counting TV, Rik Mayall gives a masterclass in scene-stealing as Lord Flashheart in Blackaddder. WOOF!
I’m not sure of the actor’s or even the character’s name, but the pimp who does the lip-synching scene in Blue Velvet – that, man. Just that. Cinematic Moment of Zen.
He’s suave 
Catch 22, Snowden’s death (Warning: graphic war injury)
Dean Stockwell, playing Ben.
It’s what I came here to post. Here’s to Ben!
Yes, but with a different dynamic that reflects the different point of the movie.
Alec Baldwin’s character is running down the hapless salesmen. He’s delivering a Come To Jesus And We’re Still Firing Some OF You message, but in truth, Baldwin’s character is a egomaniac sociopath who just likes hurting people and demonstrating his alpha male status. He doesn’t want the salesmen to succeed. He is honest with them, but it’s a nihilist, pointless honestly. “You’re doomed, you will never be me.”
Affleck’s character is arrogant but he’s doing the exact opposite; he’s building up the recruits. He WANTS them to be successful. He’s encouraging them; you will be rich, you will make $25,000 a month, you’ll buy a Lexus, just follow my lead and the riches of Croesus will be yours. Unlike Baldwin, Affleck is positive, but is selling lies.
Are you mixing the series and the film? In the film she only has that one scene, doesn’t she? IIRC she doesn’t join them for the rest of the movie.
You remember wrong. She joins them and even stays on Serenity at the end of the movie.
She fights with a bow, which was kind of silly.