I have a few:

• Babylon 5 : The opening monologue and music score was amazing every time. Definitely an older vibe with this one with flashing images of the cast up as it progressed, but it was very good.
• Westworld Season 1 : I think it was mainly the same for later seasons with slight variations. The simple piano tune building for the whole intro was beautiful and while watching back to back would absolutely let it run maybe every other episode, or every third.
• Eureka Season 1 : The score by Mothersbaugh and quirky art is really fun and conveys the definite style of the show.