No one here has even mentioned that 2 was their fave which mine was. If you watch the movie from the beginning then everytime you see Adrian in the hospital with the baby and she tells him:
Adrian: There's one thing I want you to do for me.
Rocky Balboa: What's that?
Mickey: What are we waitin for? Let's go!
You're eyes will well up with tears I dont care who you are. This is my favorite quotable movie as well. Besides the above my favorite is
"But first ya gotta get speed. Yeah, speed is what we need. You're gonna eat lightning, and you're gonna crap thunda."