Set your TiVo 'cause Dec. 27 will be a can't-miss day for As the World Turns fans. That's Brian Gaskill's final airdate as Katie's rich, geeky stalker, B.J. Greene. Oakdale's fictional TV station, WOAK, will also throw a telethon featuring musical numbers by ATWT stars Eileen Fulton (Lisa), Scott Holmes (Tom), Michael Park (Jack) and Colleen Zenk-Pinter (Barbara).