Robert Downey Jnr has topped Vulture's list of Hollywood's "100 Most Valuable Stars", which ranks actors based on box office takings, Oscar nominations, "likeability", tabloid popularity and critical acclaim. Dubbed the "comeback kid", the magazine says Downey Jnr has been on a roll since overcoming drug addiction, moving from "unhireable" a decade ago to delivering "seven huge hits" since Iron Man in 2008. (All photos Getty)