Neko on ATHF

Did anyone else see Neko Case and Kelly Hogan's appearance on last night's episode of the Aqua Teen Hunger Force? I used to watch ATHF religiously in college, but haven't seen it much at all over the past few years. I finally made a point last night to catch it to see what crazy cartoon antics Neko and Kelly were up to. Apparently during that time off the show stopped being funny and became the Carl Show? Where did Shake, Frylock and Meatwad go, and why does Carl keep trying to sell or rent their house? I need to find some college kids to explain this to me. Between staying out of the Dan Deacon most pit and totally not getting what's on Adult Swim these days, this weekend provided proof I'm getting old.