Bollywood actor Akshay Kumar has surprised his fans by doing a cameo in  his upcoming `Dishoom` starring John Abraham, Varun Dhawan and  Jacqueline Fernandez. `Dishoom` is set to hit theatres on Friday ( July 29).The Khiladi actor  shared the first look of his cameo, where he is doing a water stunt. In the image, the Boss star is seen sitting on a jet ski -- sporting a black vest with his hair tied.Produced by Sajid Nadiadwala and directed by Rohit Dhawan, `Dishoom` also stars Saqib Saleem  and  Akshaye Khanna  besides John, Varun and Jacqueline.