Ag! No! No theory has ever been proven in the history of science, because science doesn't prove, it only disproves. "Prove," in a scientific context, translates roughly to "I don't understand how science works." Can the BBT, evolution, etc., be disproven? Sure. Plenty of ways. Can they be proven? No.

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Gillian

"Now everyone was giving her that kind of look UFOlogists get when they suddenly say, 'Hey, if you shade your eyes you can see it is just a flock of geese after all.'"

"You can't erase icing."

"I can't believe it doesn't work! I found it on the internet, man!"