If you aren't familiar with Picaboo, the photo book web site, then you should fix that today! They are my favorite site for making custom books (and I've tried a lot of different ones). From now until June 27th, they have a buy one get one free special. Just create your classic book or calendar and then use the code SUMMERTIME and you'll get 2 for the price of 1!
You can find more information about the sale on their site.