Happened to me this morning.
I got up around 4:40 and headed out to my stand at around 5:40.My buddy went one way and I went the other.It was a very dark,overcast,windy morning .I made my way to the stand quietly and turned my flashlite on when I approached the stand.I straped my bow to the hoist rope and proceded to climb my ladder to my perch 17 feet off the ground.
First things first is getting my safety belt on.I was fumbling with my flashlite and noticed a flicker in the dark not 15 yards from the base of my tree.I went back on it to see what it was and low and behold it was a young bear maybe 100lbs.To say the least I was quite nervous.He was standing there behind the tree the whole time I was on the ground.
I shooed him away,buckled up and hoisted my bow into my stand.Set everything up,and proceded to wait for first lite and hopefully see some deer movement.
Maybe 5 minutes after I was settled I can hear scratching on a tree directly below me.I pull the flashlite out once again knowing this young bear is hanging around and really wanted to make sure there wasnt a bigger one with it.
Now I am perched in a big maple,and another just to my left maybe a foot apart.This tree I hang my bow,quiver,etc.He is standing on his hind legs,scratching the tree directly below me.Licking his lips and I have nothing but a bow in hand which is useless in the extreme dark.I shoo him about 3 times and he is just standing there stairing at me.I stand up,kick the platform of the stand and yell at it,knowing I just warned every deer in the country of my presence-----lol.He then jumped about 3 feet in the air,and ran off into the thick woods never to be seen again.

Being a young bear,I know he was just curious.Really couldent make out what a big blob of leafy camo is doing in the tree but he eventually got the point I wasnt dinner.
To be honest,I was a little uncomfortable with the situation.
In my 17 years of hunting on my own I have never run into a situation like this before.

I never did see any deer today,but I will be back out tomorrow at around 5:30 in the morn.Wish me luck guys