My friend gave me 10,000+ ROM's for Sega, SNES, NES, and GBA. They where all individually zipped. I go fed up trying to unzip them one by one, and decided to write a script to do it for me. It unzipped about 5,000 in under a minute. Python's zipfile module is nice, but it sometimes wont open some zip files. It throws an error saying something like "Corrupt Zip File", but seems to unzip fine with 7Zip. I use 7Zip for all my compression needs now a days, but this script was a learning experience, so I though I would pass it along.