Robert Downey Jr. on Breakfast

It's hard to describe Robert Downey Jr's character in his new movie Tropic Thunder. But in his own words, he's the dude playing a dude disguised as another dude!

Starring Ben Stiller, Jack Black, Tom Cruise and our guest Mr. Downey Jr., new comedy Tropic Thunder tells the story about three bigshot actors who are filming their latest blockbuster - problem is they have zero chemistry with each on set! So their director has to go to extreme measures to make sure their movie gets finished on time and under budget.

As well as finding out more about Robert's new movie Johnny wanted to talk Sherlock Holmes, as Robert is set to play the famous Baker Street detective in a new movie which is set to be directed by Guy Ritchie.

To open our shiny player and listen to the full interview, click on the link to your right,