4. Polycom ( PLCM) makes video-, voice- and Web-conferencing products. Polycom reduces the need for business travel, saving time, money and cutting carbon emissions. The company has grown sales, net income and earnings per share 9.4%, 2.4% and 4.2% annually, on average, since 2008. Its stock has achieved annualized gains of 33% over that span. It has advanced 28% already in 2011, but has fallen out of favor with sell-side analysts. It receives 10 "buy" ratings, eight "hold" calls and a "sell" ranking. Polycom's fourth-quarter adjusted earnings more than doubled to 49 cents, exceeding analysts' projection by an impressive 14%. Sales stretched 27% to $340 million, beating consensus by 3.6%. Performance was bolstered by growth in overseas markets. The company generated nearly half of revenue from its Europe, Middle East and Africa and Asia-Pacific units. It has partnerships with service-providers AT&T, Verizon and China Unicom. Polycom has an ideal financial position for accelerated growth, with $494 million of cash and equivalents and no debt.