In a continuation of staff shake-ups at the White House, Press Secretary Scott McClellan this morning announced his resignation from the post. McClellan, who has served the president for 2 1/2 years, appeared at a press conference with President Bush. The president praised McClellan and announced that, in a move many feel is designed to put a somewhat friendlier face on the administration, McClellan will be replaced in this position by the Easter Bunny.