For me it was GoT, I just thought the miniature landscapes looked way too cool. Also I am watching Kimmy Unbreakable which has a theme song that I think is pretty catchy.
They've since lost the rights to Teardrop so all the newer copies have that crappy theme. I had to do a lot of digging to find a version of the series with Teardrop.
Boooo. Getting to listen to the theme is a big part of the show for me lol. I sacrificed a lot of quality just to have the theme. Pretty sure the version on my Plex is only 480p.
I listened to House MD on crappy "watchtvforfree.net" type websites over a decade ago, and I only just realized now that the theme wasn't supposed to change every episode. I just checked YouTube for the intro and I'm super familiar with all three versions haha
I like them all in their own way, but Teardrop obviously stands out.