On April 25, 2008, he hosted Michael Hoffman. I do not know if this issue was raised at the time. They talked mostly about white slavery, but go to Hoffman's website and see what he sells in his store.
Here is the show: http://www.2centsofnonsense.com/April2008/4-25-08%...
Look at some of the DVDs sold in Hoffman's store: http://www.revisionisthistory.org/cgi-bin/store/ag...*J11kT3&product=DVDs
He has several DVDs involving Ernst Zündel and one called Take a Tour of Auschwitz Fakes.
None of this is mentioned during the program.