Liam and Noel Gallagher had been fighting since forever, it seems like. A recording of one of their fights ("Wibbling Rivalry") reached the UK charts in 1995. Noel Gallagher's departure from the band (and the band's eventual breakup) stemmed from a fight backstage with Liam.
You have (probably) all seen the video with them on the treadmills.
Catchy choreography in their online music videos - OK Go!
OK Go! became an internet sensation when they posted their (seemingly) low-budget music videos on YouTube and fans became so enthralled with the band's fancy footwork that a number of copycat videos soon popped up as well.
Peeing on a fan - Oli Sykes
The lead singer of Bring Me the Horizon peed on a female fan at a tour because of her refusal to have sex with him.
Having his daughters on an out-take reel with him - Ozzy Osbourne
Ozzy Osbourne was shooting a commercial back in 1984 with his two daughters Aimee and Kelly. The first time that they did this one of the kids puked on him. The second time they did it Aimee sneezed on his hand.
Ozzy said "Oh my god! Why? Why can't you be more like the Osmonds?
This reportedly happened during a concert in Des Moines, Iowa on January 20, 1982. A concert goer threw the bat on stage. Thinking it was a toy bat, Ozzy then proceeded to bite off its head, then threw the headless carcass back at the audience. He had to have rabies and tetanus shots.