My very first all digital book... 'The Smile Shop', written by Joy Cowley. I did it way back in 1999, on my Powercomputing Mac clone. I think it had a 2 GB HDD.
I think its got some nice pages and the design was fun. I remember how I first drew the shapes on paper, then scanned and converted it into an Illustrator vector file. Then finished it in Photoshop.
The colors still look deep and fresh... probably the lack of any line helps. I think I sent it in on a Iomega zip disk.