For me the most interesting Groundhog Day dance I went to was when the caller (James Hutson) didn't call attention to the fact that just about every dance had a shadow in it till we hit the one that didn't. (Exceptions were two squares with heavy right-hand-lady/left-hand gent interactions, and Punxsutawney Promenade, which he claimed was mandated "by law.") I don't remember the details, but the first three dances were:
Another Nice Combination Trip to Troy (maybe) The Ritz (He did have non-shadow alternates in case of an newer crowd, but that's not what happened that night.) -Chris Page San Diego
