Here's your daily look at 'Today in Rock History' featuring: Jonathan Lipnicki is 29. He was Ray Boyd in "Jerry Maguire". Now he is a Brazilian Jiujitzu Brown Belt--probably by necessity. Shaggy is 51. No Age on Scooby, Fred or the rest of the gang. Christopher Lloyd is 81. "Curly" Howard was born on this day in 1903. In 1969, "Led Zeppelin II" was released, featuring the monster jam "Whole Lotta Love".