I feel totally out of the loop:
I didn’t put 2 and 2 together to realize that the Harry Shearer in Spinal Tap is the same guy in A Mighty Wind and the same guy that I see in the credits for The Simpsons (Waylon Smithers, Mr. Burns, Kent Brockman).
And he’s had a show on NPR for 20 years: Le Show. If you have high-speed go for it. He totally rips in to Rush Limbaugh.