ANSWER
Two, as of today (March 15, 2003). Timothy McVeigh was executed June 11, 2001, followed eight days later by the execution of Juan Raul Garza. A third, Louis Jones Jr., is scheduled to be executed this Tuesday (March 18, 2003).
WHO GOT IT RIGHT: JP Weigt, Robin Campbell, Marc Quinlivan, Allan Christensen, Bob Milligan, and Yanitz Grinell.