Courtesy of HP
HP continues its astonishing transformation under CEO Mark Hurd, from an underperforming printer-reliant giant into the world's largest tech company (almost $130 billion a year in revenue), thriving in multiple markets. Last year, it surpassed Dell as the top PC seller and in the process showed Apple -worthy design chops with its sleek TouchSmart computers featuring touch-screen functionality. HP's $2.7 billion acquisition of 3Com -- a year after the $13 billion deal for EDS made it an instant IBM  (#18) rival -- signals that it's ready to take on Cisco  (#17).
Palo Alto, CA
| NUMBER OF
total revenues for most recent fiscal year
what the company is most famous for
Initially, for its printers, but now for being the world's largest tech company.
why it's innovative
For continuing to deftly diversify its business. It has passed Dell as the top seller of PCs, and its stylish computers rival Apple's, especially the new TouchSmart line. Meanwhile, its print business introduced Web-connected printers.