Ashton Kutcher and Alec Baldwin, two stars of popular sitcoms, each came out against the anti-piracy bill on their Twitter feeds today.

Kutcher, star of “Two and a Half Men,” who has more than 9 million Twitter followers, wrote, “Please don’t ignore what’s happening here. IMPORTANT MOMENT IN HISTORY!” He added the #StopSOPA hashtag and a link to Wikipedia’s protest page. He had earlier indicated that he opposed the legislation in a December blog post.

Baldwin tweeted, “I support strong anti-piracy laws, but the SOPA bill is typical, latter day US Congress overkill.”

He added, “You should be immediately suspicious of any regs supported by the US Chamber of Commerce.”

It also can’t be much surprise that Michael Moore shut down his site in protest.