If you are new to Zarbon's Masterpiece Theater (ZMT) then here is a quick description. Zarbon, Freiza's right hand man from Dragon Ball Z, has his own talk show where he interviews various characters as actors from the DBZ universe.
In this classic episode, Piccolo speaks about going into the medical profession after finishing his work on Dragon Ball Z and GT and tries to convince Zarbon that he should have his prostate checked more often. Nappa also gets to eat cookies.
More detailed credits for ZMT can be found at zarbononline.com. This flash file was submited by BogusRed, the animator for the show.