TheStreet's Jim Cramer commented on the highly anticipated milestone of the Dow Jones Industrial Average hitting the 20,000 mark. "The Dow means nothing, but when it goes to these round numbers, suddenly it's gonna be in the Times. I saw a Dow 20,000 hat," Cramer remarked. "I like the low key market," he added. "I don't want to be talking about these numbers. I don't know whether the individual components should be up as much as they are. I totally recognize the excitement, but the excitement has historically been a bad side -- so I don't want to be a downer, but Dow 20,000 would probably trigger more selling than buying."