2 things for me: when I hear either I want a Hippopotomus for Christmas or the Bing/Bowie version of Little Drummer Boy on the radio. Also, and this is a Pittsburgh thing, when they play the Eat-n-Park Star commercial.

http://www.youtube.com/watch?v=P3NhDtfZmd0

I have been known to coming running from the opposite side of the house when I hear those opening notes...