Random selection by computers impossible?

[marbles]

Was watching a Travel Channel show the other night on Vegas Cheats and there was one who claimed he had cracked the code of a video keno's random number generator. He made a bold and interesting statement:
(paraphrased) "It is impossible to program a computer to generate random numbers."

My wife looked at me like he was some kind of crackpot, but I agreed with him. Isn't his statement right?