My one and only bear encounter involved a black bear in the Ouachitas. Luckily, mine scared off pretty easy...but he was brave enough to come back within an hour. This repeated about 6-8 times throughout the night, roughly whenever I started drifting off to sleep and stopped making noise. He would come crashing through the brush to my camp, I would yell and shake the tent, he would go bounding down the hillside, rinse and repeat.
After nearly every bear story I hear, I always think about carrying bear spray not for protection, but to put a little fear of humans into the bear so he thinks twice next time.
I'm talking black bears here. I tend to agree with Stephen Colbert when it comes to grizzlies.