Oh yes, I was expecting JKR to redeem Snape in some way like that, and I'm glad it happened.

Yeah, I've always thought Snape would end up being a good guy. There was too much character development for it to be wasted on, "Nope, he's just evil". Plus some of the sympathetic stuff in Book 5.

Snape's love for Lily seemed a little on the creepy side at times,

Yeah, a bit. But that's Snape for ya. ^_^

but just the fact that he absolutely went out of his way to protect her son (whom he definitely had no love for) because he knows she would've wanted it does show a very important side to him,

Indeed. His love for her was clearly very deep and during. It was REAL LOVE, not just lust or possessiveness. He, like Harry, had the one quality Voldy would never understand.

and I wish that Voldemort could've known about that...that it wasn't Voldy that Snape was so loyal to, but Lily.

Harry did tell him, during the film duel.

And Snape's sarcasm wins. XD

I have a shirt: "Sarcasm is the body's natural defense against stupid". I think Snape would appreciate it ^_^