He's always seen having like 15 arrows in his back every damn time. Whats up with that?

This will be answered in ROTK, thanks to a surprise cameo by Julie Andrews:

They just chose not to show Legolas pulling them from corpses after he used them, that's all.

Because the CG artists keep painting them in.

this was my take on it as well.

It's been awhile since I've read the book, but I vaguely recall this coming up around FOTR's release, and someone quoted from the book about Legolas doing this very thing.

Yeah, the books touch on a couple of instances where he is picking them up and collecting them.

arcane quiver?

i do remember in the books Legolas does pick up arrows that hes shot into dead orcs

He's got a Quiver of Holding +4. Plus, he's an elf, so he has bonuses to his... oh, forget it, I'm geeking myself out.

that would also explain some of the different colored fletching on his arrows(picking up other people's arrows to use)

Also, it's the beauty of movie magic.

Before a fight, he goes up, up, down, down, left, right, left, right, B, A, Start.

Presto! Unlimited weapons and life.

LOL

Not in part 2. There he goes left right left right down up b a Start.

you need a select in there if you want 2 player...........ahh more games should use the select button