Cramer's 'Mad Money Lightning Round': Time to Get Sirius

To see the full "Mad Money" Recap, please click here.

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Here's what Jim Cramer had to say about some of the stocks that callers offered up during the "Mad Money Lightning Round" Tuesday evening:

CME Group (CME Quote): "I would buy more! This is a company that is a principal beneficiary of the volatility of the market. They are doing a miraculous job. It is incredibly well-run. ... I think now is the time. ... The more volatility, the better."

Life Partners (LPHI Quote): "Miraculous company. ... They've created a secondary market in life insurance. It's a brilliant business model. I liked it before, and I like it again."

MasterCard (MA Quote): "People try to make this as a consumer play. ... It's just a transaction play, and transactions are going up worldwide. ... The stock has been stalled here. I remain bullish, but I gotta tell you, there are better situations here than MasterCard because it has ... quadrupled on our watch, and I think it's resting."

UnitedHealth (UNH Quote): "I've gotta tell you guys that I have been wrong in UNH," which Cramer owns for Action Alerts PLUS, his charitable trust. "I'm bullish, and it's done absolutely nothing other than to make me look bad, but it doesn't make Warren Buffett look bad. He's been buying it hand over fist. ... I think UNH works. ... I'm stickin' by it, but my credibility is very low with UNH."