I had meant to put this up sooner.
As you may know, the Neptune Theater in the U-District has turned from being a movie theater to an entertainment hall. This week they are featuring a number of free events that may appeal to a teen in your family (or even adults). Most of these have some degree of interaction for the audience.
Tonight is free showing of The Rocky Horror Picture Show at 7:30 p.m. with doors opening at 6:30 p.m. (Bring your umbrella and toilet paper.) First come, first served and yes, there is a costume contest.
A complete calendar is here.