Well, if you're going to start a thread about a show, can it have some substance to get a conversation going?
Saying "I love _____" is pointless.
But if you mention something in the show that touched you, a particular part of the score you liked, a lyric that you always think about, anything at all. Even asking a question, will probably get a nice conversation started.
But starting a thread to just say how much you love a show seems rather pointless.
"One no longer loves one's insight enough once one communicates it."
The opposite of creation isn't war, it's stagnation.