Here's what I mean.
1. Game of Thrones - iconic for many viewers, favored both for visuals and the tune
2. Around the World in 80 Days - this one is a recent victim of leftliberal media Kulturkampf, but not a bad show, pretty good intro, grabs the essence of the story, did not watch it entirely until I dl'd this one;
3. The Sopranos - awesome, just wanna listen that song again
4. Lost - bam, this is the best, it doesn't even gives the time to react and reach for the jump 10 sec forward button, a brief pause between two scenes

Now as for the Beforeignes, it's not that easy since all the episodes have different intros, or opening credits, I'll see if I can grab a few.

Also post more intros, shitty or great, memorable or the ones you skip fast.