ABC's Boston Legal will tackle a temporal anomaly of sorts with its April 3 episode, which in recounting a hostage taker's decades-old grudge against Denny Crane will use footage from The Defender, a 50-year-old TV pilot starring William Shatner, to show what transpired during the original, contested court case. Young Denny, I have but one piece of advice: Let Joan Collins die. Trust me.