*When you own multiple cast recordings of the same show and the movie version soundtrack (if any) and then make a compilation CD after listening to them all and choosing your favorite rendition of each song. (Not that I ever did this, with CHICAGO, or anything!)
*When you get upset when they DON'T make a new cast recording (either the Broadway cast like PHANTOM & MAMMA MIA - or - the London cast like PRODUCERS & WICKED)!
*When you spend almost $40 to rebuy a cast recording you already own because now it comes with a bonus DVD with, like, three minutes of bonus material.
*When you no longer know the color of your walls because of all the windowcards hung on them (in chronological viewing order, of course!)
*When your friends make it part of your nickname.
*When you daily go to "You Know What" dot com and search for whatever show is your current obsession.
*When you watch film versions of musicals and entertain (or annoy) your friends telling them every little detail that is different.
<-- Tevye, FIDDLER ON THE ROOF, March 2018