All the time. I remember about half, and only the really hilarious/terrifying/awesome ones get posted here.
Last night I was wandering through a shopping centre, past 10pm. Many of the light bulbs were blown, and there were oddly few shoppers. I was on the second story, passing by a bookshop, when a strange dog-like animal manifested itself (? It was just there) and began attacking people. Oddly enough, there was a squad of five or six men with R-5's and bullet proof vests standing right there, who opened fire. They managed to damage its jaw, but not enough; it killed them, somehow. I started slowly and smoothly backing away from it, but it started chasing me anyway. I spent close on five minutes running from it, before spinning and kicking it solidly in the muzzle. It caught onto my foot, but I dislodged it.
I had run into an area of the mall that was still under construction; there were beams across the ceiling at just above head height, and the walls were unpainted. I reached a corner of the corridor, which was walled with glass on the outside, before jumping and grabbing one of the beams. I swung myself up, just avoiding the beast snapping at my feet, before swinging myself forward and landing on its back, feet together. I snapped its spine and crushed its ribcage when I hit it.
A horrific, easily nine foot tall winged humanoid with horns and massive claws rounded the corner. I awoke.