Corrected entry: When Ali G and his 2 friends Ricky and Dave are breaking in the MP's office trying to steal the videotape, they enter the laser-room. The lasers are extremely visible, so Dave doesn't need to blow smoke into the room. (01:05:10)
Geert Kusters
21st Jan 2004
Correction: They are not visible until he blows smoke, which throughout the time you see the smoke.