"West Side Story" debuted on Broadway in 1958. Based on Shakespeare's "Romeo and Juliet" it may refer to being on the west side of The Barrier, or to Zoo's star crossed lovers Clementine and Sam.
Another Soundgarden referenced by Billy Burke's character. When Clementine and Mitch are looking for a name for Clementines baby, Mitch says what about Chris Cornell? Chris Cornell is the leadsinger of Soundgarden.