7th Heaven wasn't the only Monday drama to post impressive Nielsens. NBC saw another strong performance from Medium (15.8 million viewers), while Fox's 24 drew a solid 12.2 million viewers. (I can't believe they almost killed — spoiler alert — Behrooz!) Later that night, Jay Leno's emotional tribute to Johnny Carson on The Tonight Show scored a preliminary 11.2 rating, making it the fourth-most-watched episode since Leno took over in 1992.