I just counted, and it appears I have over FOUR HUNDRED Simpsons-related deviations!
Nearly all are about Sideshow Bob, of course, but a tiny fraction of a percent do not involve him or any other member of the Terwilliger family. Also a few deviations are technically duplicates (i.e. censored vs. uncensored, fill in the blanks vs. blanks filled, edited/improved version, etc.) and some are simply photos I decided to share. So I don't really know what should truly count as a deviation or not, and since I kept losing precise count of them all, I can't give an exact number.
Suffice it to say that I have posted just over 400 Simpsons-related deviations in the nearly five years it's been since this very first one I posted back in December 2010: