For me, the only thing more fascinating than interesting pictures, are interesting pictures of very small things. Macrophotography, or close-up photography of small objects, can reveal a world of amazing detail. Really, such photography is limited only by the tools of the photographer.
Take the above picture from philliefan99. Clearly the four eyes of the spider are visible, along with their unique size and shape. You’re even capable of seeing the individual hairs on the legs and body of the creepy crawly. Would you notice such details if this were to scurry onto your leg right now?