Event was rescheduled from April after honoree Sammy Nestico was injured in an accident
Honorees are Marc Shaiman, Sammy Nestico
Composer has been nominated for work on "South Park" and "The American President."
Warner Bros. developing stage musical based on kids' favorite.
He loves Broadway, but his 3-minute web video, "Prop 8: The Musical" was "one of the most thrilling things I've done."
