My experiences with ANN have been rather limited but I have written a couple of small codes. I also spent a lot of time working with ANN during summer jobs. In the future I hope to incorporate ANN into my PGA optimization code in the hopes of reducing the total number of expensive analysis calls required to find the global minimum.
Heteroassociative feed-forward backpropagation neural network for converting 4-bit binary strings to base10 LED display JAVA applet
Several years ago I wrote a little Win95 program to solve the Traveling Salesman problem (TSP) with various techniques. It can solve the TSP using Hopfield net, Kohonen net, or with a genetic algorithm. It's limited to a small number of cities, which makes it more academic than practical, but it's still fun to play with.