A colleague of mine is having a child she's planning to name Adeline. We got into a conversation about what a wonderful old name that is, how Elliott Smith had a song called "Sweet Adeline," and how I knew of a few references in other songs to a much older song also called "Sweet Adeline" (Jimmie Rodgers' "My Old Pal," Mann/Costello's "The Other End of Telescope"), but how we didn't really know that other old song (in our head, both of us kept thinking of "Sweet Caroline"). Courtesy of the Intertubes, there is not only this helpful Wikipedia entry but this unlikely gem of a performance. Enjoy.
UPDATE: Oh, but there's more.