I liked August and miss him calling in. The Payola Guy was great.
Also have to say a good word for Captain Jack. I never found him the least bit terrifying. I guess I found him obnoxious and funny in the same way I found Matt Walsh's calls to the show obnoxiously funny. I thought his was obnoxiousness calculated for comic effect, and for me, it worked more often than not. But hey, what do I know? I'll even laugh at Gilbert Gottfried from time to time, and everyone I know seems to think he's the biggest drip on the entire planet.