Chris Brown was at Puff Diddly Pooh’s post-Super Bowl party in Miami Sunday night, and may have something going on with another Z104 artist in the Big Fat Rumor of the Day. Sources say that Chris and Keri Hilson were “grinding each other” on the dance floor. They eventually left the club together although witnesses say they were with a group of friends.

“OK!” magazine says that Alex Rodriguez is now hooking up with Cameron Diaz. They made their debut, if you will, during Super Bowl weekend in Miami, where they were seen partying with Tom Cruise and Katie Holmes, among others. Tom and Cameron are in the upcoming movie, “Knight and Day”. A source says, “A-Rod and Cameron have been totally hooking up.”

Michael Jackson’s doctor Conrad Murray has finally been charged with involuntary manslaughter, ending a seven-month investigation into the singer’s death. The cardiologist, who was with Jackson when he died June 25 is accused of acting “unlawfully and without malice” in bringing about Jackson’s death, according to a complaint filed by prosecutors. The complaint said Murray acted “without the caution and circumspection required” when he administered the powerful sedative propofol to Jackson in an effort to help him sleep. If convicted, Murray faces up to four years behind bars. Here’s a catch, though. Murray can still practice, though, which the California Medical Board wasn’t happy with. They wanted the court to ban Murray from practicing medicine immediately because they can’t do it right away.

Carrie Underwood is now a “Sesame Street” Muppet. They are introducing a new character named Carrie Underworm. The real Carrie Underwood sings the worm’s theme song cleverly called, “The Worm Anthem”. It all debuts this Thursday on PBS. And yes, that is Jeff Gordon doing the introduction by the way.