By Emily Feimster Celebrities are known for a lot of things but playing well with others is not always one of them. Ah, if only their parents had paid more attention to them! With egos soaring high in Hollywood, it's no wonder there's so much beef between the rich and the famous. Hop on board as we take a ride through Tinseltown's latest temper tantrums.

The most recent celebrity tiff involves former pals Paris Hilton and Nicole Richie, who became household names after wreaking havoc across America in "The Simple Life." In April, Paris released a statement saying, "It's no big secret that Nicole and I are no longer friends. Nicole knows what she did, and that's all I'm ever going to say about it." Reports swirled that what she did had to do with Nicole showing Paris' notorious sex tape to a gang of friends for big laughs as an evening's entertainment, but no one is stepping up to confirm that one. The pair was supposed to join forces once again for season four of the reality show, but Paris has publicly been pushing for Rod Stewart's daughter, Kimberly, to replace Richie. Though no decision has been made by Fox, have you ever seen Paris not get what she wants? Exactly! Besides, it's not like she needs the money.

It seems that Hilton and Richie aren't the only friends making headlines. Actress Brooke Shields has hit out at her former pal Tom Cruise for criticizing her "misguided" use of drugs to combat her post-natal depression. Cruise claims to have helped people fight drug addictions through his controversial Scientology religion, so clearly he is an expert. In between his public makeout sessions with new flame Katie Holmes, he has managed to find time to attack the "Suddenly Susan" star for becoming dependent on Paxil, following the birth of her daughter Rowan. Shields fired back, "His comments are dangerous. He should stick to saving the world from aliens." Oh, snaps!

Another public battle came just a few months ago when Oscars host Chris Rock infuriated 2004 winner Sean Penn at the Academy Awards when he doubted the acting ability of Penn's latest co-star, Jude Law. The comedian placed Law as a "second choice" for casting agents after none other than Tom Cruise. When Penn arrived on stage to present the Best Actress trophy to Hilary Swank, he took time to defend his "All The King's Men" co-star, saying, "Jude is one of our finest actors." Backstage, Rock said he had spoken to Penn about their disagreement. He explained, "Sean said because he's working with Jude on a movie right now he felt the need to... I don't know. It's kind of funny." Well, Penn never was one to be in on the jokes.

Other recent feuds involve R&B singer R. Kelly who is suing Jay-Z for $75 million, accusing the rapper of "sabotaging" the pair's abruptly canceled Best of Both Worlds Tour. The tour was plagued by friction between the two artists from the onset, with cancellations and late start times. The tensions reached a climax at Madison Square Garden when Kelly stopped his performance after spotting what appeared to be two men with guns in the audience. On his way back to the stage, Kelly was reportedly assaulted with pepper spray by a member of Jay-Z's entourage.

Two other superstars who haven't managed to make amends are former Los Angeles Lakers teammates Kobe Bryant and Shaquille O'Neal, who never cared much for each other. In all fairness, it is hard to see eye to eye when you both have egos the size of Texas. Even with O'Neal's trade to Miami, the pair continues their ongoing war of words.

As for the biggest feud maker in the celebrity realm? Well, you might say Fox news anchor Bill O'Reilly, who has battled with George Clooney, Jon Stewart, and rapper Ludacris.

However, the outspoken Sir Elton John has managed to top even scrappy O'Reilly. Captain Fantastic has found himself in hot water with, well, everybody this past year. If he wasn't offending the Taiwanese press by calling them "rude vile pigs," he was accusing Madonna of lip synching, George Michael of acting strange and being disappointing, and the "American Idols" fans of being racists.

Hey Elton, why don't you tell us how you really feel?