Mary McDonnell starred in Scream 4. Scream 4 has genre Horror comedy
[Human]: Could you recommend any movies by Mary McDonnell? [Assistant]: Sure, she's been in lots of movies.  Which genres do you like? [Human]: I am a fan of all types of movies, but lean more toward comedies. [Assistant]: You might like Scream 4.  It's a Horror comedy that Mary McDonnell stars in. [Human]: I love the Scream movies. Wasn't Courtney Cox in that movie too? 
Yes she was.  That movie featured lots of stars, like Neve Campbell, Hayden Panettiere, and Alison Brie.