I grew up fully fascinated with Atari. Not just the games, but the promotional graphics as well - the instruction manuals, the t-shirts and patches, and of course the boxes. Real heads know that Activision had the best box designs out there. Clean vector graphics, funny style illustrations, and the ever-present rainbow trailer - these visuals appeared on all of their box designs, giving them a consistently strong sense of identity. Their boxes are identifiable from a mile away. Here's one of my favorites - River Raid.
Click for larger view