DANCING WITH THE STARS -"Episode 407" - On week seven of "Dancing with the Stars," the remaining celebrities and professional dancers performed a dance discipline for the Ballroom Round and the Latin Round, on MONDAY, APRIL 30 (8:00-9:45 p.m., ET), on the ABC Television Network. (ABC/CAROL KAELSON) JUDGES, TOM BERGERON, JULIANNE HOUGH, APOLO ANTON OHNO