Based on the volume of online discussion during a three-day window, a TV show that aired last week is the fifth-largest online event of 2011, reports B&C.

The finale of "The Oprah Winfrey Show" joins the list at No. 5, behind Osama bin Laden’s death, the Royal Wedding, the Super Bowl and the Oscars.

Oprah’s last show bested online chatter surrounding the finale of "The Office," the premiere and finale of "American Idol" and the finales of "Glee" and "Dancing With the Stars.”