spiritdogs:
Thanks, these are the best flea photos I've seen or been able to find. FYI, none of the other links work. 
I saw the name drugstore beetle in one of the links though, and so I googled it. The bugs I am seeing look similar, I think?
I still don't know though...I haven't seen these things jump, I don't think. I think I remember seeing wings (although I haven't seen them fly), and I know I read that fleas don't have wings. They crawl right onto my fingers pretty readily. I can kill them by just rubbing them between my fingers, but it's not overly easy, either.
Whatever they are, I keep finding them crawling on top of my bed sheets...ewwwwwww!!! I only have white sheets on my bed atm, partly because it's easier to see any bugs that might be on them...but I also wonder if the white color might be attracting bugs to them. I keep re-washing my bedding pretty much every day, although I haven't even been sleeping in my bed.
I usually only see the bugs at night...when it's dark outside, my bedroom window is open (with a screen), and the light is on (I'm a night owl). My bed is pretty close to the window and, because my room is not that big, it is not too far from the overhead light...so I guess it could also be some kind of random bug that is just attracted to the light and coming in through the window and ending up on my bed...but when I do see them, I see quite a few. Whatever they are, it is really gross!
Oh, and I have checked for flea dirt and didn't find any.