Actor-filmmaker Farhan Akhtar was bowled over when superstar Shah Rukh Khan gave him a sneak peek into the 3D trailer of his mega-budget project "RA.One".

"@iamsrk showed us two songs and the trailer of 'RA.One' in 3D last night... to put it simply... Outstanding!!!!" Farhan posted on his Twitter page Tuesday.

"RA.One", a superhero film, is releasing this Diwali. Meanwhile, Farhan is busy wrapping up "Don 2: The Chase Continues", a sequel to the 2006 film, "Don: The Chase Begins Again", which itself is a remake of the 1978 film "Don".

"Last song of Don in the cans... now the film is officially complete, " he added.

The film, starring Shah Rukh in the lead, is set for release in Dec 2011.