Fortune 1000 rank: 77
Best Companies rank: 11
No. of U.S. employees: 27,493
Most common salaried job (Avg. Pay):
Software Engineer IV ($123,021)
What makes it so great? CEO John Chambers held this network-equipment provider together after the dot-com bubble burst, and 2006 saw record sales and a 60% jump in the stock. (Virtually all employees are shareholders.)