Is it theater or theatre? What’s the “Politics & Prose of punctuation”? Do I really have to abide the camel-hump capitalization of harDCore? Find out in Washington City Paper‘s internal style guide, our D.C. manual of style and usage. [WCP]

Watch Paperhaus‘ trippy, violet-hued video for “Cairo.” [D.C. Music Download]

After you see Gone Girl, see these films about messed-up relationships, screening in D.C. [Washingtonian]

What’s up with the abundance of architecture design firms (and lack of artists) in the list of finalists for the forthcoming NoMa underpass installation? [East City Art]

Read your teenage diary and listen to others read theirs at the Mortified show at Town. [Post]

Watch local artist Whitney Walker, a Corcoran alumna, draw a big chalk mural at 1700 Pennsylvania Ave. today. [Washingtonian]

Smithsonian magazine’s Ingenuity Awards are coming, and Rosanne Cash will win one. [Post]