I "forged" documents with gimp once --- needed to print out and sign something for a wire transfer when I was abroad. I pasted in my signature and sent it back, but they said it needed to be print out, scanned, and sent back. So I opened it in gimp, added noise and rotated it by a degree or so to look like it was scanned --- and they accepted it, no questions asked. So...I forged my own documents.
Banking in the US is sometimes a bit humorous. (Meanwhile, in the country I was staying, at the end of the night someone picked up the tab, wrote down their bank account number, and said "transfer me $XYZ thanks" --- was pretty great.)