Its boat too often rides along the current, borne safely into mediocrity.

Summertime in D.C. brings three things: heat, interns, and outdoor movies. The First Baptist Church at 17th and O Streets NW is providing one of those, sponsoring Movies by Moonlight, a free movie series benefitting local charities. Tonight’s movie is Spiderman, starting at 8:30 p.m., with donations going to First Helping, a D.C. Central Kitchen program that feeds the homeless. There will also be free popcorn and drinks, so bring a few dollars and help…