I was thinking about this; I am the biggest MCU fanboy and I love Chris Evans as Captain America. I love him. I also like watching different types of movies.

Everytime I watch a movie with Chris Evans in it, I only see Captain America. As much as I love him--I probably couldn't enjoy other types of movies he is in.

That got me to thinking about whether or not there are any actors that are so good, I would watch a movie just because they're in it.

For instance, Tilda Swinton. She was magnificent in Dr Strange. She is just such a dynamic actress with such a great range. I've seen her in Constantine, Snowpiercer, Hail Cesar, The Grand Budapest Hotel, Burn After Reading, We Need to Talk About Kevin... and so on and so forth and what have you.

TLDR: Would you watch a movie just because an actor is in it?