Yeah you're walking through a forest or on a mountain and you here the roar of a dragon, you turn around and see a couple archers shooting at it and some warriors waiting for it to fall to the ground so they can finish it off. Or the dragon spews fire out of it's mouth and kills a couple of them. That would be an epic thing to run into...

I'm actually slightly skeptical about whether Bethesda will be able to ensure that fighting large creatures is satisfying, because in past games, very large creatures could potentially cause some problems, and even when they didn't, they were essentually like smaller creatures except with more health and doing more damage for the most part. They didn't really make you feel like they were epic encounters quite unlike standard ones, nor did you have to change your tactics for them, it's just that do to their size, you'd be hacking at their legs rather than their torso, and that was only a visual thing. Of course, the dragon fight in the trailer looked promising, but I'm not certain how well it represents how things will actually play out in the game, I realize that it's in-game, of course, in the sense that the fight scenes were rendered and filmed in the actual game, but it may have been scripted, or at least staged, to ensure it fows better, and it waits to be seen if we can really expect every dragon fight to be that good. Now, I'm sure I'll enjoy Skyrim regardless, but I am not yet ready to say that fights against large enemies will be as impressive as they deserve to be.

Ideas for making big creatures look bigger:

Make them immune to a number of attacks (Some vulnerable to arrows to the head/arm/eyes), climbable back where you can bury your sword/viking axe into, make it harder to run away from them.

Would make for more interesting fights as you try to find out their weakness as they slowly kill you.

Best comment ever: DO A BEAREL ROLL!

I'd join a Hunter's Guild.
These are the sorts of things that are possible with Radiant Quests! Endless hunting trips with your hunting companions.

I has seen people casting paralyze on bears in rugged terrain in Oblivion, pretty fun as the bear rolls down the hill and usually dies from fall damage.
As I understand it work best with bears as they are pretty round with short legs.

It should work well enough with a warbow, if you don't hit bones the arrow will penetrate to the feathers. I do not see that spears will go so deep and you want deep penetration to hit vital organs.
Yes nobody hunted mammoths with bows in real life, it was extinct before the bow was invented, add that the war bows like longbow or composite bows was not invented until much later then you need something able to penetrate armor. You don't need a heavy draw to kill normal animals like moose.

A spear work well against large creatures because it's long reach, however the trunk on a mammoths will have even longer range.
Setting it fur on fire with a fireball might work, or might make it seriously mad.

ah i can see this happening...

lures large creature to cliff (throat of the world anyone?)
cast paralysis.
get behind it.
FUUS RO DA
watch the fall.

Doing that with mammoths would be just... AWESOME.

Yeah I really hope they don't pull a "you can't kill a mammoth, it's just helps make the environment feel more alive." I know they won't but I will be really disappointed if they do.

That would be cool, it reminds me of Shadow Of The Colossus.

Have we heard anything about animal scaling in the wild? For instance, will we have to wait till were level 25 before we actually get to see a Mammoth/Dragon or a giant? I hope not, that would be super lame. That's one thing that really bugged me in OB. You didn't get to experience the whole bestiary at once. The cool monsters would randomly appear as if they'd never been living there at all.

I also just want to mention how excited I am to fight mammoths and dragons.