Thanks to Mike Informer here are the replay dates and times for Smackdown, which were preempted last night.

Philadelphia (WPSG): Sat. 3/31 10 to Midnight

Washington, DC (WDCW): Sun 4 /1  3-5 pm 
Spokane (KSKN): Sat. 3/31/07 8-10pm
Seattle (KSTW): Sat. 3/31/07  8-10pm 
Portland (KRCW): Sat 3/31/07  8-10pm