6. Van Halen, 1983 US Festival - Booze and Coke
Van Halen had been off the road for three months when the 1983 US Festival rolled around, but when Apple Computers co-founder Steve Wozniak gave them $1.5 million to headline Heavy Metal Day, they couldn't exactly turn him down. That's not to say they arrived in great shape. "David Lee Roth was nice and cordial when I met him," Wozniak wrote in his memoir iWoz: Computer Geek to Cult Icon. "[But] he was practically falling down onstage. He was so drunk, slurring and forgetting lyrics and everything." A video of the complete performance on YouTube confirms Wozniak's account. Roth is a complete mess. "I interviewed David Lee Roth at the US Festival in 1983," original MTV VJ Mark Goodman says in the new oral history I Want My MTV. "He was drunk and coked up, laughing at every joke he made."