In his third installment of the series, he named Athenahealth "probably the best" of his overlooked IPO lot, although "by far, the most expensive."

ComScore bears a resemblance to Aecom in that its IPO was relatively unnoticed and received little institutional support, Cramer said.

The company, which came public on Aug. 2, is "one of the most interesting plays around" as it is a play directly on mortgage defaults, he said. What's good about Dolan, Cramer said, is that it has not attracted much attention.

Remember: Growth money managers will pay up to two times the long-term growth rate for a stock. Starent’s growth rate is about 57.5%, which is worth a 115 multiple. So the 96 times earnings is relatively cheap, especially in a slowing economy with fewer and fewer stocks delivering the kind of growth Starent is. The earnings beat and raised guidance this past quarter gave Cramer every reason to think the growth will continue.

Cramer thinks that Masimo could be the next Omniture Inc. (OMTR) hot and totally overlooked IPO. When it came public, Masimo was priced low because the market was so bad, but the stocks should go higher.