This is really a fantastic piece of software, I highly recommend everyone checking it out if you're into pattern/texture map creation.
“I'm thinking Filter Forge should come with a warning: 'This Product could be Habit Forming'.”
“Filter Forge is an incredibly powerful new Photoshop Plugin. It's simply amazing. It gives you the power to create your own filters (you must run them from inside Filter Forge though) without any programming knowledge at all.”