"All I Wanna Do" is adapted from the poem "Fun" by Wyn Cooper. Sheryl Crow had written music for the song but was unhappy with her original lyrics. Her producer bought her ten random books of poetry, and Crow adapted "Fun" to accompany the music. Cooper is listed as a co-writer and receives royalties from the song.
While Linkin Park was at one time called "Hybrid Theory", they started out as "Xero". For legal reasons, they eventually dropped both of the original names and settled on "Linkin Park" (a deliberate misspelling of the Santa Monica, California landmark Lincoln Park).
After his burial in 1809, Joseph Haydn's head was stolen by phrenologists and a replacement skull was left in his tomb. In 1954, the real skull was finally returned, but the substitute was not removed. Thus Haydn's tomb now contains two skulls.