First things first.
Suriya. He rules Anjaan. He could be easily regarded as one of the most good looking actors in India. He's got style, he's got energy, he's got intensity, he's got an amazing voice and a chiselled body. He is totally convincing as Raju Bhai, the don and equally convincing as Krishna, Raju Bhai's brother, a common man. After Hrithik Roshan in Dhoom 2, this would a movie even guys would drool over an actor. Well, why not! Suriya deserves it.
Krishna, who's got a limp comes to Mumbai in search of his gangster brother Raju (who's to be addressed as Raju Bhai only). Quite naturally what awaits Krishna in Mumbai is trouble. He soon manages to find Karim Bhai who's one of the loyalists of Raju Bhai and learns everything of his brother and his life so far. Karim Bhai narrates the story of Raju Bhai and Chandru (Vidyut Jamwal) who share a special bond of friendship, and how they became what they were. Krishna also gets to know about Jeeva (Samantha) who's the Police Commisioner's daughter and Raju Bhai's girlfriend. Krishna is then told about Imran Bhai (Manoj Bajpai who's don of dons and tiff between Imran Bhai and the gangter duo. As a climax to this narration, Krishna gets to know the tragedy that happened in Raju Bhai's and Chandru's life and then there's a twist. You should watch to know.
Writer-director Lingusamy is known for his action flicks. He's also known for not having a substantial story line in his movies. Be it Paiyaa or Bheema. There's a lot of action and many songs. Same goes with Anjaan. There's nothing new to the plot. Anjaan also gets a bit stretched than needed due to unnecessary songs and gimmicks to satisfy (rather console) bollywood audience (if any). Movie runs for about two hours and 50 minutes.
Lingusamy has fully utilised Suriya but wasted an actor with immense calbre - Manoj Bajpai. Vidyut Jamwal (who's as good looking as Suriya) essays a prominent character but is given very less screen space. Samantha is hot. Period. Action sequences are brilliant but problem is hat there's too much action. Gun shots and action scenes recur every ten minutes (including the portion when Raju Bhai and Jeeva are falling love). Out of five, two songs are unneccesary but on the whole songs and back ground score by Yuvan Shankar Raja are decent, but again nothing new. Asif Basra is brilliant in his small role.
When it's Santosh Sivan who's handling the cinematograpgy, it is quite obvious that it would require special mention. His frames boosts the movie and multiplies the good looks of Suriya, Vidyut and Samantha. Though the whole movie is shot in Mumbai, the city has not been explored much.
One word for Anjaan - Suriya. The actor in Suriya takes a back seat and lets the star in him reign. His punch dialogues are catchy and his new mannerisms, stylish. Suriya fans would thoroughly enjoy the movie as their favourite start sets screen on fire with his uber cool looks and complete 'Bhai' attitude. Go watch Anjaan in a theatre and enjoy the crowd's reaction to their favourtire star. The story line and lack of logic (so many bloopers) were disappointing though.