What actors and actresses appeared in Big Bang - 2007?

You seem to be referring to the popular American sitcom, "The Big Bang Theory". The show premiered in 2007, and the main cast in that year included:

* Johnny Galecki as Leonard Hofstadter

* Jim Parsons as Sheldon Cooper

* Kaley Cuoco as Penny

* Simon Helberg as Howard Wolowitz

* Kunal Nayyar as Rajesh Koothrappali

* Melissa Rauch as Bernadette Rostenkowski-Wolowitz (introduced in Season 3)

Please note that the show did not have the title "Big Bang - 2007". There's likely a misunderstanding in the title.