When examination of the science is too much work for show preparation and taking a position that falls in line with like-minded ideologues is part of your shtick, you can always resort to ad hominem attacks if needed.

In a May 19 segment on his "Hardball" program about global warming, MSNBC's Chris Matthews interviewed Reps. Jim Moran, D-Va., and Dana Rohrabacher, R-Calif., who had opposing views on the issue. However, Matthews attacked Rohrabacher, a global warming skeptic, as someone ignorant of science.

"Congressman Rohrabacher, are you a Luddite, a troglodyte? Are you a part of ‘The Planet of the Apes' that doesn't want science? Where would you place yourself in this argument?" Matthews asked.