Little Richie from Family Matters lived on my block growing up from the age of about 8-10. We hung out but he was always kind of a prima donna. I remember when I moved away, I was taking photos with all my friends and I asked him if he wanted to take a photo and he said he would have to ask his publicist. This was a few years after the show ended, I don't think he has really acted since.
Oh yeah, and his Dad owned the department store kids brand No Rules if anyone remembers that. With a quick search, it still exists I guess:
http://www.norules.com/Edit: Said this one on here before in a similar thread but I used to hang out with pornstar Krystal Steel's sister a lot. Was somewhat friends with Krystal (Brandy), used to go to her house to smoke out of her giant bong because that was cool when you are in highschool. Her sister is hotter.