Have seen a total of 5 in the woods. Once while hiking with my niece and baby daughter. It was funny, we were crossing a stream, I look up the stream and see a tall guy in a black rain coat and black hat standing in the stream. I do a double take, and notice it ain't no guy. Move my hands around and make a noise and it takes off. This one was probably 210lbs or so.
2nd time I was hunting in a tree stand, just set up, blowing on a predator call. About 1 minute into blowing, a bear jumps over a log 50 feet away and stops and stares right at me in the stand, looking like "what the heck are you doing up there" at me. Being unprepared for soon of a hit, I am scrambling for my pistol, and he just takes off. That one was a small one, maybe 180 lbs.
Final time, I was hunting all day long, it was getting very late, I am following a hiking trail down off the mountain. I am around 200 yards from the state campground, well after legal hunting time, and sure enough, there is a bigun, must have been near 300 lbs. I go "oh sh*t", and fumble around trying to reload my handgun. After I have a few rounds in the thing, I whistle at him. He stops rooting around in the underbrush, looks at me once, and takes off the other way. Good thing I was not tempted to shoot him, because as I get into the campground, there is a game warden sitting in his truck.
Another time, break of day, just when it is legal to hunt, I am starting out under some power lines on a footpath. Go in around a couple hundred feet and there is a bear grunting and puffing at me. As much as I strain to look, I just can not make him out in the brush and dark. He makes noise for what must be another minute, fully knowing I was there--not coming out, but not going away. Then he just moves on. 5 minutes later and it is light enough to see him, but can not figure out where he went to and the brush off the path was too thick to go crashing thru.
Last time, I am camping with my wife in the white mtns. Hung our food in a tree, like ranger danger said to. Middle of night there is a bear jumping up and down underneath the food, trying to reach it. He went away eventually, did not see how big. Did not want to go looking for trouble, as I was not carrying.
So, 5 out of 5 encounters and they went skeedadling. I think if it had been late in the season (late november) and they were starving (especially if the mast crop was poor), and it was dark out, I would not put it past a big one to stalk you for dinner! They certainly CAN kill you if they wanted to.