The Theatre Lab School of the Dramatic Arts reprises last year's popular Dramathon tomorrow, Friday, May 18. The Dramathon features eight 10-minute plays, written in just 24 hours by some of the area's leading playwrights, including Ari Roth, Norman Allen, Renee Calarco and Jennifer Nelson. And some of the area's best professional actors, including Rick Foucheux, Kimberly Gilbert, Nancy Robinette, Michael Russotto and Kim Schraf, have signed on to perform. All have donated their time for the cause, which is to help cover costs for the twnety-year-old organization's summer theater camp for local disadvantaged kids. Friday, May 18, at 10:30 p.m., at Theatre J, 1529 16th St. NW. Tickets, benefiting the camp fund, are $15. Call 202-824-0449 or visit theatrelab.org.