LOS ANGELES - The worst-kept secret in Hollywood on Oscar night was whom Jimmy Kimmel was sleeping with.

Nevertheless, a satiric video in which Mr. Kimmel, the host of the ABC late-night talk show "Jimmy Kimmel Live," talks enthusiastically - jokingly, we are led to believe - about his sexual relationship with Ben Affleck, has been a huge hit online since it was first shown on Sunday during Mr. Kimmel's post-Oscar broadcast.

As of Tuesday afternoon, the four-minute video had been viewed more than two million times on YouTube. It has also been prominently displayed on the broadcast network's home page, ABC.com.

The "relationship" has not been a secret since at least Feb. 15, when The New York Post reported that Mr. Kimmel was preparing a star-studded video, reminiscent of "We Are the World," as a reply to a similar video presented on his show last month by the comedian Sarah Silverman.

Ms. Silverman, who is Mr. Kimmel's longtime girlfriend, unveiled her video, in which she confesses that she has been sleeping with Matt Damon, on Mr. Kimmel's fifth-anniversary show on Jan. 31. Iterations of that video have been viewed more than eight million times on YouTube.

The Matt Damon angle originated from a joke that was introduced more than three years ago by Mr. Kimmel as a throwaway line. One night, discouraged by what he described as a sub-par show with guests who "weren't what you would call A-list celebrities," he signed off by telling the audience that he was sorry that he had run out of time and that Matt Damon would have to come back on another night.

After Ms. Silverman revealed that she was hooking up with Mr. Damon - everywhere, it seemed, and all the time - Mr. Kimmel vowed to take his revenge. "You take something I love from me," he vowed, "I'm gonna take something you love from you." Most of the lyrics of Mr. Kimmel's and Ms. Silverman's songs are too graphic to be repeated here. One vulgar word describing the coital relations between, on the one bed, Ms. Silverman and Mr. Damon, and on the other, Mr. Kimmel and Mr. Affleck, was repeatedly bleeped out for the broadcast of each video.

Several scenes from the videos also required pixelation.

In a telephone interview on Tuesday, Mr. Kimmel said that the most difficult part of the project was arranging the schedules of the stars featured in his video - they included, in addition to Mr. Affleck, Brad Pitt, Harrison Ford, Cameron Diaz, Don Cheadle, Robin Williams, Josh Groban and Huey Lewis.

"Every once in a while Hollywood rallies itself for a worthy cause," Mr. Kimmel said. "We saw that with the 'We Are the World' video, with 'USA for Africa' and after 9/11. This is just the next natural step in that progression."

(A number of the stars had ABC ties, which probably eased some of the logistics. Those included Christina Applegate, star of "Samantha Who?"; Rebecca Romijn, of "Ugly Betty"; and Dominic Monaghan of "Lost"; in addition to Mr. Ford, who is the longtime partner of Calista Flockhart, star of "Brothers & Sisters.")

The gaggle of celebrities was wrangled by Jill Leiderman, an executive producer of "Jimmy Kimmel Live," who also performed the not-insignificant task of explaining the premise of the enterprise to the various stars - who, while certainly regular viewers of Mr. Kimmel's show, might have been at a Hollywood premiere or volunteering at a soup kitchen on the night Ms. Silverman's video was first broadcast.

The music was written by Mr. Kimmel's music director and bandleader, Cleto Escobedo III, Mr. Kimmel said. Also contributing to the song lyrics and the dramatic content were his brother, Jonathan Kimmel, who is a writer for "South Park," as well as the writing staff of "Jimmy Kimmel Live."

Ms. Silverman has said, and Mr. Kimmel confirmed, that her song and video were written before the beginning of the writers' strike because it was planned for broadcast on his show on Nov. 13, his 40th birthday. But planning for that broadcast was interrupted by the strike, so the video was instead shown on his fifth-anniversary show in January.

Mr. Kimmel said his video was recorded last Wednesday and Thursday. Members of the Writers Guild of America voted on Feb. 12 to end the strike.

While the video was edited for presentation on a television show that is shown after midnight in most markets, it - and its not-too-disguised premise - is now prominently featured on ABC's Internet home page. An unsuspecting visitor to the site will be introduced to the video's not-too-subtle premise automatically, because the site begins showing video clips without prompting once the home page is loaded.

The video also includes pictures of Ms. Silverman with vulgar insults scrawled across them - again, words that cannot be reprinted here and, presumably, would not appear on most Web sites affiliated with ABC's corporate parent, the Walt Disney Company.

Karen Hobson, a spokeswoman for ABC's digital division, said that any material previously vetted through the network's standards and practices department is automatically approved for use on the Web site. She said the Web site did not differentiate, however, between content approved for viewing on television after midnight and that intended to be shown in prime time, because the average age of users of the ABC Web site is over 30. Other networks have wrestled with the same issues. Ms. Hobson noted that NBC.com last year posted an unedited version of a vulgar parody music video featuring Justin Timberlake and Andy Samberg that, in edited form, appeared on "Saturday Night Live."

Regarding ABC's ties to Disney she said: "We're not talking about Disney.com. This is a different brand."