Ahh,""Totally Rad""...this was the Cyberchase Season 2 premiere! At the beginning of the episode,(the)Hacker,voiced as always by Christopher Lloyd,being the evil villain with an oversized ego that he usually is, takes over another cyber site. This time,it's Radopolis,a cybersite dedicated to extreme sports...and to top it all off he declares himself the King! In an effort to ""declarate"" the cybersite's independence,our hero,two heroines and the cyboid Digit LeBoid, challenge the Hacker's extreme team to a winner-take-all skate-off. Matt=Skateboard Jackie:Mountain Bike Inez:Scooter But there's just one catch: high-scoring tricks need as much area as possible and the field keeps mysteriously changing! With Digit LeBoid,voiced greatfully as always by Gilbert Gottfried as the CyberSquad's coach, the kids put on a dazzling display of scooting, boarding, and biking, but can they match their performance to the changing arena? The Big Idea: Different shapes bounded by the same perimeter can en