But AiG's Mark Looy says "Ken is not upset."
Christian publisher Ken Ham said Maher showed up unannounced this week to videotape an interview with him at Ham's Creation Museum, which is just south of Cincinnati. The $25 million facility, due to open in the spring, tells visitors that the earth is just a few thousand years old and that Adam and Eve lived among the dinosaurs.
Ham said a camera crew arranged a Monday visit to the museum, but he was not told that it was connected with Maher, host of HBO's "Real Time with Bill Maher."
"They sneaked Bill Maher into the building while I was waiting for an interview," Ham wrote in a blog he maintains on the Web site of his publishing company, Answers in Genesis.
Maher visited the museum for a documentary he's been filming on religion, his publicist, Sarah Fuller, said Friday. She said he's traveled throughout the U.S. and Europe for the project.
"He's been all over the place," she said. Fuller said she wasn't familiar with how the interview with Ham was conducted.
Ham called Maher's visit an "elaborate deception." He said the film crew asked for a one-on-one interview with Ham after a tour of the museum. After the tour, crew members asked for permission to bring some camera equipment in through the back of the building. Ham wrote that the crew drove to the rear, then distracted an employee as Maher ducked into the building.
Ham said he was shocked, but agreed to the interview.
"Bill Maher did interview me; though respectful in one sense, most of his questions were just mocking attacks on God's word," Ham wrote in the blog on Wednesday.
Ham declined on Friday to comment further on Maher's visit.