20 Years of Photoshop

To celebrate the 20th anniversary of Photoshop, Adobe has created a new website dedicated to the software. A nice timeline atop the page takes you through Photoshop's history, from Thomas and John Knoll's development of "Display" (that would later become the industry standard image editing software Photoshop) to CS4 and mobile apps. Digging deeper into the site, there's a reunion video, and of course an opportunity to download trial versions and read about new Photoshop features.