In order to make progress you must know where you have been. Cooph has posted an awesome video of the History of Photography. The best part, it's only 5 minutes. From Da Vinci to Kodak, it's all in there.
Learning more about your craft is never bad and can help inspire you to branch out and try new things. Take a look at the video and let me know what you thought the coolest "First" photo was. First color, first person, what ever it is let me know in the comments below.