There's much to be said for good sportsmanship and all that, but pro sports is show business and that's that. The drama and antics that come with animosity and static between teams and players can only add to the bottom line. Ask Vince McMahon. He knows how to cultivate repeat customers.
As a fan, I enjoy the spontaneous theatrics. The gesture that Manny made toward Miguel Cairo, and Cairo's facial expression upon learning that he had not cleared the fence, after his triumphant run around the bases, was the funniest thing I've ever seen. Even funnier than anything I've seen on pro wrestling, and we know how over-the-top they go sometimes.
And Varitek's pimp slap to Rodriguez? Great theatre. A game winning home run makes for a good day. A pimp slap to one of the game's biggest stars of all time creates a buzz that may last for years.