"... first on Comedy Central and then on ABC. Four guests (usually including at least one comedian) would debate topics across the political spectrum in what Maher once described as 'The McLaughlin Group on acid.' Of the 1300+ episodes produced, 190 can be viewed on YouTube."
At
the link (to Metafilter) there are links to those 190 videos, with the date of the show and the names of the guests. What a great resource! What did Bryan Cranston and Little Richard talk about on June 14, 2002? Don't you want to know what Phil Hartman brought to the table on March 14, 1997? Ray Davies (with Suzanne Somers!) on April 29, 1998. Way too many crazy match-ups to mention them all in this little post, so I'll leave you with this:
Politically Incorrect was cancelled by ABC in 2002, thanks to an incident that happened six days after 9/11. Maher and political conservative Dinesh D'Souza had this conversation on the show: