OK, maybe not THE best thing, but high up on the list.
Bex digs the laptop. Digs it. The problem is that he is prone to deleting things and causing me to cry. Well, no longer. No, ma’am. Now we have AlphaBaby and my days of toddler computer woe are over. You can start the program (or use it as the default screen saver) and when the kidlet beats on the keyboard cool things happen. It draws shapes in various colors, types letters and numbers while either saying the letter/shape/color name or sounding out the letter. It is hella cool. You can even set it up so that the non-alphanumeric keys bring up photos from your iphoto folders. Did I mention that is was AWESOME??
One small caveat. I was only able to download using safari. Firefox didn’t like their download page at all. Just FYI.