10/10/2008 05:12 am ET Updated May 25, 2011

Michael Phelps Lifts "Tonight Show" To Best Ratings Since June

The Hollywood Reporter's Paul J. Gough reports that Michael Phelps lifted the "Tonight Show" to its best ratings since June:

Record-breaking Olympic gold medalist Michael Phelps keeps working his magic on NBC.

Monday's "Tonight Show With Jay Leno" with guest star Phelps gave the late-night talker its best ratings since June 17. "Tonight" averaged a 4.1 household metered-market rating/10 share, Nielsen Media Research said Tuesday.

Continue reading Gough's report or watch a clip of Phelps on the "Tonight Show" below: