Many of President TrumpDonald John TrumpKaine: Obama called Trump a 'fascist' during 2016 campaign Kaine: GOP senators should 'at least' treat Trump trial with seriousness of traffic court Louise Linton, wife of Mnuchin, deletes Instagram post in support of Greta Thunberg MORE's Hollywood critics are cheering on the House vote on impeachment set for Wednesday, wishing the country a "Happy Impeachment Day!"

The House is poised to vote separately on two articles of impeachment — abuse of power and obstruction of Congress — after six hours of floor debate.

On social media, some of Trump's most vocal detractors in the entertainment industry expressed triumph over the impeachment vote.

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"Star Trek" alum George Takei wrote to his 3 million followers on Twitter:

Rosie O'Donnell, who's been engaged in a long-running, public feud with Trump, wrote simply:

The night before the House was poised to vote on impeachment, former "West Wing" star Joshua Malina appeared to be in a festive mood:

"Hamilton" creator Lin-Manuel Miranda tweeted a "Daily Show" segment with the hashtag "ImpeachmentDay":

Speaker Nancy PelosiNancy PelosiClinton says Zuckerberg has 'authoritarian' views on misinformation Trump defense team signals focus on Schiff Trump legal team offers brisk opening defense of president MORE (D-Calif.) had advised her caucus to be seen "taking this moment seriously," rather than being viewed as "cheering the president's impeachment," according to CNN's Manu Raju. 

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And not all of Trump's high-profile critics appeared as ebullient as some of their celeb colleagues. 

Alec Baldwin, who won an Emmy Award in 2017 for his portrayal of Trump on "Saturday Night Live," called the president a threat to the nation, while former "Charmed" actress Alyssa Milano referred to Wednesday's vote as an "extremely sad day."