Local NBC affiliate station WRC in Washington will preempt an hour of its regular scheduled programming this Wednesday from 7-8 p.m. to broadcast a http://www.nbc4.com/news/4045468/detail.html”>special Tsunami Relief Fund Drive. WNBC in New York City will anchor and produce the event in conjunction with UNICEF. The show will feature appearances by UNICEF Ambassadors Sarah Jessica Parker, Tea Leoni and Clay Aiken. If that doesn’t make you tune in, nothing will. Viewers can call in pledges to…