Rush Limbaugh to appear on Family Guy

This struck me as very odd, but Rush Limbaugh is going to be on Family Guy, one of those animated TV shows that pushes the limits of good taste most of the time at times.  I always considered this show a bit over the top for me, and it makes South Park look like Leave It To Beaver by comparison.  But this preview looks interesting, and shows that Limbaugh has no problem laughing at himself.  Check this out.