April 26, 2018 3:41 am 'Tonight': Cast of ‘Avengers' Sings ‘The Marvel Bunch' The cast of “Avengers: Infinity War” sing their own version of “The Brady Bunch” theme song, “The Marvel Bunch,” on “The Tonight Show With Jimmy Fallon.” US & World Videos 0:40 Watch: Police dog tracks and finds missing 85-year-old woman in Colorado 3:09 Mama bear and cubs caught on video having a spring pool party in a California home 2:19 11-year-old celebrates teachers with appreciation snack cart 1:19 Met Gala 2024 after party looks: Cardi B, Lana Del Rey, EmRata 6:22 Craig Melvin compares ‘TODAY' crew to NASCAR