Who are the actors/singers/performers et al heralded as the Next Big Thing and then......

nada.....

crickets.....?

Hayden Christensen

He received worldwide fame after starring in Star Wars: Episode II – Attack of the Clones (2002) and Star Wars: Episode III – Revenge of the Sith (2005). He was all over tv and magazines and was being heralded as "the next Leonardo DiCaprio."

His post-Star Wars roles were nowhere near as successful and he mainly sticks to indie projects today. His 2008 sci-fi film Jumper was made with the intention of becoming a franchise, but it never happened due to its poor reception.