I remember back when I was in junior high school, we used to call our heavy weight "Denver." That all came from this old cartoon from our younger days called "Denver the Last Dinosaur." The heavy weights were dinosaurs because they all had large bodies and small brains.

Now, we call them "ogres," because they're ugly and smell funny.
Just kidding, it's all in good fun. I used to be a middle weight, but now that I've suffered a few college years, I've "grown" a bit. Now, I'm involved in working with the heavyweights, or ogres. The guys I coach with and work with give me a lot of grief, but I've learned to respect them fatty, stinky, slow-movin' ogres.
They've got some adversities that they have to overcome directly because of their, um, larger girths. I know others have touched on this topic, so I won't dig in too deeply - shots. Try teaching a big guy how to shoot a hi-c and convince him that if he hits it correctly that he won't get his nose flattened by 200+ lbs. of ogre-meat. And then try to teach that same kid how to hit a sweep single. I hate to stereotype them, but heavier weights often lack that little thing we call athleticism. They work hard at being able to hit a technique like a sweep - and when they master it, it is impressive!
I guess I'm also a little biased - I loved Greco-Roman back in my day (all those many years ago?) and I love watching people get tossed. I guess you see more tosses in the upper 3-4 weights (sometimes I consider 171, 189, ans 215 to technically be ogres). All it takes is a little patience. Keep your eyes open a little longer than you think they could possibly remain open, and you will see that ogre hit an amazing move (I'm really exaggerating here; it happens quite often) and you will be impressed by it.