Absolutely agree with you. G0T's theme song is unusually long. Yet, I haven't forwarded past it even once.Same with Fringe (I love the little changes they make based on the episode's universe or timeframe). The retro theme song was absolutely nerdgasmic. I also used to be quite fond of Rome and Prison Break's (chiefly because of the music, which is also composed by the music director of GoT) opening sequences.
Here is an interview I enjoyed with the director of the title sequence - it includes sketches and concept art.