If you're like us and value your sleep, you probably nodded off into your Ambien dreamland before the party started on post-prime time TV. Don't worry; we've got you covered. Here's the best of what happened last night on late night.

"Jimmy Kimmel Live" won Monday night by featuring the cast of Marvel's "The Avengers: Age of Ultron," which opens May 1.

Six cast members -- Robert Downey Jr., Chris Hemsworth, Mark Ruffalo, Chris Evans, Scarlett Johansson and Jeremy Renner -- were on "Kimmel" preparing for the movie's big L.A. premiere that night. JKL really went into superhero mode, with videos like "Cheesy Marvel Cartoon Openings" and "The AvenGerbils: Hamsters of Thor," discussions on Marvel Comics and costumes, Bruce Banner/Iron Man bromance fan art, fan Q&A, and the Avengers playing fun games of Family Feud and Telephone.

Here's the Telephone game to start the night - oh my, did that message get lost along the way. (Love Scarlett's reaction): The cast discussed how it was to film the second film vs. the first. Robert Downey Jr. said it was "magical" because "Little Missy over here was knocked up." Scarlett did not look thrilled to have this brought up. Jimmy asked who is the "social director" of the group, and the Avengers pointed to Chris Evans and Jeremy Renner. RDJ said he's in charge of brunch and Pluto, Lord of the Underworld (Jeremy Renner) takes over at night. Here's the Avengers Family Feud, which is just classic. Chris Evans, aka Captain America, led The Americas with Jeremy and Mark. Robert, aka Iron Man, led The Mans, with Chris Hemsworth and Scarlett, even though Scarlett is not a man. 'Jimmy Kimmel Live!': Avengers Family Feud
"Avengers: Age of Ultron" will not have a post-credits scene, but JKL had one, with Paul Rudd, aka Marvel's "Ant-Man." Who is going to clean that up? "The Avengers" were not the only late night guests on Monday. Sarah Jessica Parker was on "The Late Show" and gave a tribute to David Letterman, shared her dream about him and then had the sex talk. James Corden's "The Late Late Show" had the eclectic mix of Erin Foster, Sara Foster, and Christoph Waltz. Reggie asked a deep acting question to Christoph, but he just wanted to meet the hot bass player, Hagar Ben Ari. Work the room, Waltz!