Being a POTO connoisseur, it would be the OBC and OLC casts of "The Phantom of the Opera," and the Los Angeles cast with Guillaume, and the Toronto cast with Colm Wilkinson -- oh, heck, just let me see ALL the Phantom of the Opera versions.
Audrey, the Phantom Phanatic, who nonetheless would rather be Jean Valjean, who knew how to make lemonade out of lemons.