I just got a 50mm lens and had fun trying it out today--not that I need an excuse to take pictures of my kids. Here is my daughter patiently assisting me as I experiment with the aperture.
And here is my son pausing for a moment (emphasis on moment). Right here is the definition of little boy: Scrape on forehead, check! Dirt on chin, check! Sweat on brow, check! Rosey cheeks, check! Crusty snot, double check!