So far this year, the "American Psycho" writer has used social media to attack actor Matt Bomer, newly anointed "Fifty Shades of Grey" screenwriter Kelly Marcel, and Lindsay Lohan's (ahem) work ethic. Now he's taking aim at Oscar-winning director Kathryn Bigelow, claiming she owes all of her success to her sex appeal - not her obvious talent.
According to the Hollywood Reporter, the 48-year-old author wasn't too happy about the acclaim surrounding "The Hurt Locker" director's latest film, "Zero Dark Thirty," and posted an indisputably sexist tweet to show it.
"Kathryn Bigelow would be considered a mildly interesting filmmaker if she was a man but since she's a very hot woman she's really overrated," Ellis tweeted.
Ellis' post is not only an example of the misogynist views that continue to prevail in Hollywood, it also shows how far some will go to call attention to themselves via social media.
Ellis is clearly uncomfortable with the praise Bigelow is receiving for her work, and perhaps his envy is fueled by the negative publicity surrounding his upcoming film, "The Canyons," starring Lohan and porn star James Deen.
Christopher Rosen of the Huffington Post wrote that the film's trailer "looks like the opening credits to an MTV docu-series."
"You could be forgiven for thinking this 'The Canyons' trailer, starring Lindsay Lohan, is a parody," said Erin Strecker of Entertainment Weekly.
In August, Ellis used Twitter to insist that "White Collar" star Bomer should not be cast as Christian Grey in the upcoming screen adaptation of "Fifty Shades of Grey" due to his sexuality.
"Okay I'll say it. Matt Bomer isn't right for Christian Grey because he is openly gay," he tweeted. "He's great for other roles but this is too big a game."
The homophobia is all the more egregious considering that Ellis has talked about having male lovers himself.
After posting numerous "Fifty" related tweets, Ellis later announced he was passed over as the film's screenwriter.
"It's a very major disappointment to announce that I've somehow been taken off the list of possible screenwriters for 'Fifty Shades of Grey,'" he tweeted.
That disappointment turned to outright jealousy when Marcel was chosen to pen the screenplay for the best-selling BDSM tale.
Ellis posted, “Kelly Marcel?!? KELLY MARCEL?!? Kelly Marcel is WRITING the script for 'Fifty Shades of Grey'?!? THIS is the movie they want to make? ARGH."
In October, the writer tweeted his frustration at Lohan's ability to keep to "The Canyons" postproduction schedule.
"Patrick Bateman (the serial killer protagonist in 'American Psycho') has just headed over to Lindsay Lohan's hotel to confront her as to why she missed her f**king ADR on 'The Canyons' today..."
Though it remains to be seen whether Ellis' Twitter rants will aid his ailing career, his online musings are quickly destroying his ability to be taken seriously.