"Maggie Gyllenhaal as Rachel Dawes in The Dark Knight."

"Paul Rudd as the asshole husband in Night at The Museum.... If you watch that movie while imagining that Ben Stiller and Paul Rudd's roles were reversed, it would be so much better. Night at The Museum is secretly a Paul Rudd movie.Edit: the husband wasn't an asshole character. I misremembered. His only crime was too many pagers"

"Malekith and Kaecillius.They could have cast nobodies, but they wasted some pretty good actors on one-offs."

"Mads Mikkelsen but not for the reason you might think. I don’t really like Kaecilius. I think he is the weakest villain of Phase 3. He is cool but unlike other villains he isn’t developed enough so he is kinda weak in that movie. I also think Mads is a really good actor and I think he would’ve been perfect for a role as Doctor Doom and it always gets me sad when I realize we will never see him as Doctor Doom."

"On the same train as “not miscast but poorly used”, I’d like to remind everyone of Zachary Levi as the borderline nonexistent Fandral."