I really love all the doo-wop classics already mentioned. Let me mention one more favorite: "Speedo" (as in "They often call me Sppedo / But my real name is Mister Earl.)

My friend and sometime mentor, the late great Ernie K-Doe, was a member of the Flamingos very early in his career. His mother took him north from New Orleans to Chicago when he was a teenager, and they got hooked up with producer Harvey Fuqua.

Ernie had a monumental ego and a penchant for, er, occasionally stretching the truth, but I know he belonged to the group at some point in time, because his face is clearly seen in the album-cover photo most commonly used for Flamingos "greatest hits" collections. Late in life, he began claiming credit for singing the great hit "I Only Have Eyes For You" ~ perhaps my single favorite vocal recording of all time ~ but I am sure that the lead-vocal voice on that record is NOT K-Doe. However, it's quite plausible that he was part of the vocal harmonies on that great record.