With a total of 144 songs (including repeats) and well over 500 minutes of playing time, this massive boxed set, whose nine discs each contain between 12 and 19 performances, truly is, as host Ed Sullivan famously said, "a really big show." With some 20 songs between them, the two most important rock acts of the 20th century, Elvis Presley and the Beatles, both of whom received huge career boosts from the Sullivan show (garnering a reported 80 percent audience share and 70 million viewers, respectively), are well represented; so are other genres, like Motown and '60s rock. Wonderful, galvanizing performances by, among others, the Jackson Five, the Animals, James Brown, Janis Joplin, Jackie Wilson, the Rolling Stones, and even the Association ("Along Comes Mary").