It’s almost impossible to find an artist as successful as Paul McCartney. He achieved unimaginable success and fame, both as a member of The Beatles and as a solo artist. Apart from music, McCartney has had a hand in many other projects. These include documentaries, movies, TV shows, and also animal rights activism. He is a very proud vegan in fact. But, did you know that he missed out on the chance to appear on one of the biggest sitcoms of all time? Yes, we’re talking about Friends!