Featured in the following...

Straight Outta Compton
0:18 Barry tries to steal the car. They sing it as they drive the car to the party.
Appetite For Destruction
Gangsta Gangsta
The song played by the group at their first gig managed by Jerry Heller
The song being rapped by MC Ren in the studio, while making their debut album, Straight Outta Compton.