New Wave Jacket by Polysics has an incredible intro that fuses 8 bit, acoustic drums and surf guitar. It's one of my favorites.
Fell In Love Without You by Motion City Soundtrack makes the rest of the song that much better. It's like an orchestra tuning up until the Moog comes in and blasts the rest of the song in. They also have a song called Cambridge that catches me off guard when it comes in.
As for two track intros, We're So Starving into Nine In The Afternoon on Pretty. Odd. by Panic At The Disco, and The End into Dead on The Black Parade by My Chemical Romance are very good ones. I aimed for a similar progression on my record, Core.
There's probably a bunch I'm missing, but those are the best ones off the top of my head.