Family Guy Season 9 Episode 2 (Family Guy s09e02) with title “Excellence in Broadcasting” aired on Sunday, October 3rd 2010 at 09:00 pm via FOX Network.
Here is summary for Family Guy Season 9 Episode 2 :

Rush Limbaugh (who provides his own voice) signs books at the Quahog Mall and gains a convert: the formerly liberal Brian, a development that riles Lois. “You brainwashed our dog,” she fumes. Rainn Wilson has a voice cameo as himself, and Shelley Long and Gary Cole provide the voices of Carol and Mike Brady of “The Brady Bunch.