The only piece of identification he carries on his person is a discount card from Ralph's supermarket and he did work as a roadie for Metallica, whom refers to as "a bunch of assholes," on the "Speed of Sound" tour.  
Little about his personal history is revealed, though he claims to have been one of the Seattle Seven as well as one the authors of the original Port Huron statement, not the "compromised second draft."  The only piece of identification he carries on his person is a discount card from Ralph's supermarket and he did work as a roadie for Metallica, whom refers to as "a bunch of assholes," on the "Speed of Sound" tour.  Aside from his dislike of Metallica, he hates The Eagles, but seems to enjoy Creedence Clearwater Revival. His best friends include Donny Kerabatsos and Walter Sobchak, who are on his bowling team.  FTP, name this marijuana-smoking, White-Russian drinking hero of The Big Lebowski.
Little about his personal history is revealed, though he claims to have been one of the Seattle Seven as well as one the authors of the original Port Huron statement, not the "compromised second draft."  
The Dude or Duder or His Dudeness or El Duderino, if, you know, you're not into the whole brevity thing (do not accept "Jeffrey Lebowski")