New Delhi:-Robert Downey Jr, better known for his role of 'Tony Stark' in 'Iron Man', has turned 51 on Monday. On his birthday today, let's take a look back at some of the famous movies of the actor, who has been successful in making one of the brightest careers in Hollywood. 1) Iron Man:- One of the best movies associated with Robert Downey Jr is 'Iron man'. He played the role of an industrialist and master engineer named 'Tony Stark', who constructs a powered exoskeleton and becomes the scientifically advanced superhero Iron Man. 2) Sherlock Holmes:- Sherlock Holmes was an action mystery, which was considered as a turning point in Robert's life. Robert received critical acclaim and won several awards including the Golden Globe award for the movie. 3) The Avengers:- 'The Avengers' was based on the Marvel Comics super heroes, who fight as a team against Loki, played by Tom Hiddleston and his fellow aliens to save humanity. The film was released 2012. Robert won the MTV award for 'Best Fight'. 4) The Judge:- The 2014 movie features Robert as 'Hank Palmer' who returns to India after knowing about his mother's death. After arriving here, he comes to know that his father, the town's judge Joseph Palmer (Robert Duvall), is suspected of murder. Hank discovers the truth and, along the way, reconnects with his estranged family. Robert won People's Choice Awards for his role. 5) Kiss Kiss Bang Bang:- Another movie which enrolled him as one of the finest actors in Hollywood was 2005-release 'Kiss Kiss Bang Bang'. The movie revolves around a thief masquerading as an actor, who gets involved in a murder mystery where he pulls a struggling actress too in the situation. The actor's performance was praised by critics, helping him receive nominations in Satellite and Saturn awards. We wish Robert Downey Jr a blessed birthday and a great year ahead.