So far, more than $80 million has been pledged from the second “Stand up to Cancer” event held last week in Los Angeles. The telethon hosted by Katie Couric, Diane Sawyer, and Brian Williams was simulcast live and commercial-free on ABC, CBS, FOX, NBC, Bio, Current TV, Discovery Health, E!, G4, HBO, HBO Latino, MLB Network, mun2, Showtime, Smithsonian Channel, The Style Network, TV One and VH1.

Diane Sawyer, Brian Williams, Laura Ziskin and Katie Couric at last week’s “Stand up to Cancer” telethon. (Photo: ABC/RICHARD HARBAUGH)

• After the jump, Couric’s behind the scenes video from the night.