It doesnt stop playing after unplugging headphones
Another thing i do like is if it cant find the album art, im guessing it goes to Google and gets a picture. I have a lot of small time bands that dont really have it going yet, and I have their band picture as album art.
Also if you have a song playing, the tracking is a grid of little dots at the bottom of the screen, I love that, its very Droid like
3 is amazing! First time I've had album art in years! But most importantly: it put my songs in album order! FINALLY!!! No more alphabetical order!