Nancy Shevell

Nancy Shevell beamed for hundreds of cameras in London's Leicester Square, a green silk jacket on one arm and Paul McCartney on the other. The 49-year-old trucking heiress dazzled on the red carpet at a movie premiere with the ex-Beatle, her boyfriend of 18 months. Two days later, Shevell shielded herself behind a colleague, turning away from cameras recording a Metropolitan Transportation Authority meeting where she cast a vote to raise city subway fares 25 percent.

Few who have seen Shevell photographed in Israel, Antigua and at the Grammy Awards with McCartney know of her other life as an executive at a New Jersey trucking company and board member of the nation's largest mass transit agency. But her public and behind-the-scene personas have collided more and more since the socialite began seeing McCartney in the Hamptons in late 2007.

Since January 2008, Shevell has missed four full board meetings, more than any voting member, according to MTA meeting minutes reviewed by The Associated Press. She attended one Finance Committee meeting in the past year, and has 26 absences total, according to the agency's records. Shevell skipped an MTA committee meeting approving a controversial fare hike the day she walked the red carpet in London. Since early 2008, the unpaid appointee has the worst attendance of any voting board member, sometimes missing meetings to travel around the world with McCartney.

Liza Marquez

Liza Marquez alleges that Caruso "engaged in an ongoing strategy of intimidation, isolation and control...with the goal of asserting and maintaining power…extending to all areas of her life and work during their relationship." Caruso's camp has yet to comment on the suit, which paints him as extremely jealous and quick to charge her with being unfaithful, at various points in their relationship accusing her of having affairs with his personal assistant and even her own cousin and making sexual advances to his best friend, as well as to actors Greg Kinnear and Billy Dee Williams.

Caruso and Marquez dated and lived together for three years, from 2004 to 2007, after meeting while Marquez was working as a travel coordinator on CSI: Miami. Per her suit, he promised Marquez that he would provide for her financially for the rest of her life and as such informed her that she "no longer needed to work, or should work, so that she could be there" for him.

During a stop in Paris in July 2004, she claims Caruso "asserted an irrational, jealous and abusive reaction" after she spoke to another man at an Internet café, and that he "proceeded to berate and emotionally abuse her" to the point where she was forced to "retreat to the bathroom and vomit." In the fall of 2004, during a Jane Goodall event in Malibu, Caruso allegedly became "enraged" when he spotted Marquez speaking to fellow partygoer Kinnear, launching into a three-hour tirade as to how "disrespectful her actions were and how humiliated he was."

Snoop Dogg

Snoop Dogg, is the focus of much Internet buzz after it was reported that her dead body is being hidden by the rapper in their home. On the California Highway Patrol's website on Thursday, April 9, a "possible fatality" was listed, called in by a tipster, reports TMZ.com. "The Word is that 'Snoop Doggy Dog [sic]' has the dead body of his wife in his basement," reads the report at 3:19 p.m.

The gossip site claims that the report was "so ridiculous that no one at the CHP bothered to forward it to the L.A. County Sheriff's Department." Fingers crossed that all if well with Mrs. Broadus. Representatives for the rapper could not be reached early Friday. Snoop Dogg, 37, married his high school sweetheart, Shante Taylor Broadus, in June 1997. Although he filed for divorce seven years later, citing irreconcilable differences, it never went anywhere, and they renewed their wedding vows in January 2008.

The most noticeable users who post 140 characters or less are the celebrities who are using the site to directly communicate with their fans, including rappers P Diddy and Snoop Dogg. Stars like Ashton Kutcher and wife Demi Moore, singer/songwriter John Mayer, British actor Stephen Fry, cycling ace Lance Armstrong, singer Britney Spears and even US President Barack Obama are on Twitter.