Showcase is a graphics design tool for use with all Silicon Graphics workstations. With it you can create presentations, brochures, kiosks, even t-shirts! Check out the SGI Product Description. Better yet, get an SGI workstation, run Showcase and crank out some art!
Here are a few showcase files I've created. Click on them to view in Showcase. If you're not on an SGI workstation you can view a larger image to see what you're missing.
Clicking on the image below shows you a big version. Clicking on the title below will either present you with a file dialog for downloading to your machine, or run showcase with the file. In the former case just double click on the file after downloading. In the latter, use the Showcase save dialog to place the document in a file on your machine.