In addition to a large number of "one off" segments produced for the show, each season had a staple of regular features. Season one had two primary recurring segments: a nature show spoof entitled "Think About It! With Professor Dave", which was actually taped in Africa and features a misinformed slacker as its host; and "Trail of the Royal Mounted", an actual 1930s black and white serial re-edited and re-dubbed for comic effect. Season two features several recurring segments: "Tangled Webs" a loose parody of the documentary series "In Search of..."; "The Rugged Road To Learning", a re-dubbed 1910s black and white documentary; "Sally Polkadot", a stop-action puppet show that takes place in the enforced utopia "The Land of Lollypops" that pokes fun at stereotypical British children's shows; and "Esoteric Knowledge", a spoof of the low-budget 1960s films that used to be shown in science classes. Additionally, new or re-edited episodes of "Think About It!" are presented. In season three, much of each episode was occupied with the mostly live action and puppets "Dee Dee & Dwilfer" show, which had a number of regular sub-segments itself (see below), and which always ended with "Dee Dee" pressing a large "panic" button on her vest in frustration or shock at the behavior of the alien "Dwilfer". Season four's episodes are largely occupied by a live action and puppets show entitled "Mack's", which also features a number of regular sub-segments (see below). These episodes have a darker, more adult, atmosphere about them, and each "Mack's" segment ends with an automated "Evil Content Override" by "IB".