What confirmed me in my opinion of the Barrow-wight's creepiness was the fact that he broke into Tom Bombadil's house and hid in the bedroom, to await the latter's arrival:
Dark came under Hill. Tom, he lit a candle;
upstairs creaking went, turned the door-handle.
'Hoo, Tom Bombadil! Look what night has brought you!
I'm here behind the door. Now at last I've caught you!
You'd forgotten Barrow-wight dwelling in the old mound
up there on hill-top with the ring of stones round.
He's got loose again. Under earth he'll take you.
Poor Tom Bombadil, pale and cold he'll make you!'
Quite the stalker.
What do people think?