bunch of pencil (tool) sketches

hey. been back to work at an animation studio since late august, after an eight-month layoff. more than the work, what i really missed was getting my lunch breaks to do some celebrity caricatures in sketchbook pro. so i've been doing some here and there wherever i can get time. for no apparent reason, i decided with these ones to (1) do them all using only the pencil tool, and (2) hold onto them until i had a big batch i could post all at once. so here they are. they range, in terms of their degrees of fame, from pretty obscure to famous enough that they should be easily recognizable if i've done them right. so see if you can tell who they are. if anyone can guess all ten of them... well, there's no prize, but i'll be fairly impressed, i promise.