Best/Worst Opening Credits

I just started watching When the Weather is Fine, and the opening credit sequence is so charming! I really appreciate opening credits that are well-done and never skip them. But some dramas have openers I have to skip.

A couple great openers that come to mind are the ones for Vincenzo and Little Women -both are stylish and suspenseful animations with music that really sets the mood.

Conversely, much as I adore Another Oh Hae Young, I hate the opening sequence. I feel it sets the wrong mood (fluffy and cute) for a fairly dark drama. And the song that's featured in the opener for Her Private Life is soooo cutesy, I can't take it.

Maybe it's just me! Are there other fans out there who pay attention to opening sequences and take note of especially good (or bad) openers?