Yeah Yeah Yeah

It's quite possible we never would have heard of The Beatles were it not for George Harrison being funny:

When the audition was all over, Martin invited them up for a chat and listen in the control room. Martin gave them a long lecture on recording and what was what at Abbey Road. "We gave them a long lecture about their equipment and what would have to be done about it if they were to become recording artists," says Norman Smith. "They didn't say a word back, not a word, they didn't even nod their heads in agreement. When he finished, George said, 'Look, I've laid into you for quite a time, you haven't responded. Is there anything you don't like?' I remember they all looked at each other for a long while, shuffling their feet, then George Harrison took a long look at George and said, 'Yeah, I don't like your tie.' That cracked the ice for us and for the next 15- 20 minutes they were pure entertainment. When they left to go home George and I just sat there saying 'Phew! What to you think of that lot then?' I had tears running down my face. "  Martin was later to comment that it was their wit more than their music that sold him.