On Friday, Today's Katie Couric and Al Roker expressed exasperation with how comedians won't stop making fun of Howard Dean's scream. After furthering publicity for the outburst by playing clips of a couple of Jay Leno jokes about it, Couric pleaded: "Let's hope all the jokes are going to soon be over for Howard Dean." Roker chimed in: "Hopefully, today." MRC analyst Ken Shepherd caught the yearning at the top of the 8am half hour on the January 23 Today: Couric: "You probably know the late night comedians have been having a ball at Howard Dean's expense for his raucous...