From hitting the skins for Nirvana and Them Crooked Vultures to fronting one of the world's biggest bands in the Foo Fighters, there's no denying that when it comes to rocking, Dave Grohl knows a fair bit about it.
If you're a fan of any of those groups, or his heavy metal side-project Probot, you'll know that every time Grohl's name is mentioned anywhere, the phrase "nicest guy in rock" isn't too far away.
By all accounts, Grohl deserves that crown. He's happy to answer any and all questions in interviews, is always calm, friendly, patient and accommodating with fans, and to date there's only one lonely incident on his chucking-the-toys tally.
How many other rock stars came Down Under to perform charity shows for free earlier this year? Even Bono didn't do that.
I've met Grohl. Heck of a nice guy. I've also watched him backstage being forced by media reps to take part in some of the most ridiculous media requests imaginable.