Dominic Monaghan doesn't mince words when it comes to his former Lost costar Matthew Fox. When asked by a fan if he could persuade Fox to be more active on Twitter Monaghan coldly replied: He beats women. No thanks.

When the fan hilariously reminded the actor about the presumed good times the former co-stars had together. Monaghan wasn't having it. He snapped: How do you know we ever did? You don't know either of us. He beats women. Not isolated incident. Often. Not interested.

Last year Fox was accused of assaulting a female bus driver in Cleveland but the charges have since been dropped. According to TMZ Fox is reportedly puzzled by his fellow Lost actor's accusations.

While celebrity feuds are not uncommon, the female catfights are usually the ones to make headlines. Yet over the last few years, a number of notable men have clashed in bro-down. Here's a look at the top five.

Alec Baldwin vs. Harvey Weinstein

At the Cannes Film Festival this year, Alec Baldwin wasn't too pleased with mega producer Harvey Weinstein. The 30 Rock star was in town to film the documentary Seduced and Abandoned, which Weinstein decided not to be involved with. The film focuses on the film market at Cannes and Weinstein was initially slated to be a part of the production. According to reports, Baldwin was angry over his decision to drop out of the project, which chronicles the challenges of financing a film. Numerous high-profile film professionals -- including Francis Ford Coppola and Roman Polanksi -- have reportedly agreed to be interviewed for the documentary, but Weinstein declined to be involved. But one outlet is reporting that Baldwin is angry because he had been counting on financing support from Weinstein, which he isn't getting.

At one of the festivals lush parties, Baldwin chose to publicly express his disdain for film mogul. Rumor has it that Baldwin told numerous attendees:

 I don't care who knows. After the success he had at Cannes last year and all the f***ing Oscars, he's still a f***ing douche bag.

The Emmy winner commented on the incident via Twitter but instead of denying his backtracking, he doubled down, lashing out at the Hollywood Reporter for publicizing the incident.

I come all the way 2 Cannes w my friend James Toback 2 make a doc re the festival, Baldwin tweeted The H'wood Reporter focuses on some crack w Harvey W.

Jon Lovitz vs. Andy Dick

In 2007 Jon Lovitz and Andy Dick were both at the comedic outpost The Laugh Factory when a fight broke out between them. Lovitz reportedly assaulted Dick and referred to him as a disgusting human being.

The fight stemmed from deep rooted issues between the two funnymen. For years, Lovitz has maintained that Dick was responsible for his friend Phil Hartman's death. He has gone as far as telling the press that the former Just Shoot Me star reintroduced Hartman's wife to cocaine a few months before she killed Hartman and took her own life.

He revealed: Andy was doing cocaine, and he gave Brynn some after she had been sober for 10 years. Phil was furious about it - and then five months later he's dead.

Kanye West vs. 50 Cent

In 2007 50 Cent was so sure he was going to sell more records than his rap rival Kanye West that he vowed to quit the music biz if it didn't happen. Much of the feud between the rappers was created by the media and fueled by fans. Rolling Stone even featured both 50 and West on its cover and asked Who Will Be the Next King Hip-Hop? When 50's Cutis was slaughtered in the album sales charts by West's critically acclaimed Graduation his retirement claim was deemed an empty threat.

Shia LaBeouf vs. Frankie Muniz

For those that have forgotten, Frankie Muniz was the star of the hit series Malcolm in the Middle. The young actor made a rare appearance in the gossip headlines a couple of years ago when Shia LaBeouf publicly insulted him. When the Transformers star was praised for starring in successful movies he humbly replied: While that's flattering as hell, you could have put Frankie Muniz into any of the movies I've been in and those movies still would've still been No. 1.

The statement led Muniz to retort via Twitter with Dear Shia Labeouf. It's getting creepy the fact that you can't stop talking about me. It's been 12 years now. I don't know you. Thanks.

Sean Penn vs. Wyclef Jean

It's the battle of the humanitarians for Haiti! When Haitian born singer Wyclef Jean announced his plan to run for president of the impoverished country, the outspokenly political Sean Penn let the rapper know he should not count on his vote.  In 2010 Penn took to the web to express his disdain for Wyclef's plan. In a piece he wrote for the Huffington Post  the actor maintained:

The only attention that Haiti seems to be getting today is on a presidential campaign of personality that threatens to create a new swell of social unrest in a plagued country. I would caution Mr. Jean against research, or prospective policy, by sound bite.

Jean fired back by accusing Penn of being too drugged out to recognize his positive influence in the region. While performing at a concert he told the crowd:

I got a message for Sean Penn: Maybe he ain't see me in Haiti because he was too busy sniffing cocaine.