It's that time again! Jim Cramer rang the lightning round bell, which means he gave his take on caller favorite stocks at rapid speed:

Thermo Fisher Scientific: "In our charitable trust, we made a sale as we described in our actionalertsplus.com bulletin, that the stock had run so much, we were concerned that you would get a chance to buy it lower. It has come down, but not low enough to be able to pull the trigger."

AMN Healthcare Services: "I want you to stick with it. If not, buy more. Susan Salka [CEO] is welcome on the show anytime. I like this story very much. I think it's a good one."

ViaSat: "ViaSat turned out to be the winner — as we said it would — versus Gogo. But we have to do more work on ViaSat, because Dave Cote [Honeywell CEO] was here recently talking about the connected airplane, and it did seem like they were going to build in some of the things that ViaSat has. Let's get ViaSat on the show and make some decisions."

H&R Block: "H&R Block has come down, so you think it might be valuable. But we spoke with Intuit recently, and holy cow! They are taking the world by storm."

Vectren Corp: "Straight forward ... I've got no problem with that one at all."

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