From Yahoo! News - The Eight Biggest Tech Flops Ever

"What distinguishes a simply bad product from the truly awful? Sometimes it's a dreadful user interface. Other times it's a product that successfully addresses a particularly daunting problem - yet one shared by relatively few people. And often competitive or financial pressure forces new products to market before they're ready - full of bugs and horribly unusable. Still other times, the products arrive too early. Eventually they become a success, but often after the founding company has been ruined. "