• Billie and his wife, Adrienne, co-own a record company called Adeline Records that features bands such as AFI and The Living End.

• Mike owns a café/restaurant called Rudy's Can't Fail Café, named after a Clash song. It is located in Emeryville.

• Mike can play the bass, farfisa organ, guitar, and drums.

• Tré can play the drums, accordion and the guitar.

• Tré has played with The Lookouts and Samiam.

• Their song 'The Grouch' was originally titled 'Happy Grouch'.

• In 'Longview' just after Billie Joe says "call me what you will", if you listen carefully, you can hear Mike call Billie 'whatyouwill'.

• The song 'Who Wrote Holden Caulfield?' is named after the character, Holden Caulfield, from J.D Salinger's book, 'The Catcher In The Rye'.

• Many bands thank Green Day in their thankyous, including AFI, Blink-182, Anti-Flag, The Ataris, Reel Big Fish, MxPx, Sum 41 and The Donnas.

• On VH1's '50 Greatest Album Covers', Dookie was #7.

• At age 15, Billie tried to go to an Operation Ivy concert, but he was refused entry. One of the members of the band heard he wasn't allowed in, so they came out and personally esorted him into the show.

• Billie Joe's birthday is on the same day as National Cabbage Day.

• Billie used to have a nose ring, but took it out because it kept getting caught on his shirt.