I believe that Paychex processes our payroll.. I'll have to give this one a look. Payroll services have to be making money!
I'm a big fan of PayChex. The company has an extremely reliable record of earnings and is one of two major players in the payroll market. The sales are repeat, and they have a chance to cross-sell new service to existing customers. They also have an excellent DRIP. Definitely a good choice for a stock purchase.
I am a Paychex man from way back: http://www.superiorinvestor.net/modules.php?name=News&file=categories&op=newindex&catid=3 Definitely re-invest the dividends on this one.