'Law & Order,' A Hot Franchise, Seeks a Rich Deal Early From NBC
NBC, which already pays highest prices in television for its long-running hit shows, faces earlier-than-expected renegotiation for Law & Order, another cornerstone of its top-rated line-up; show's producer Universal Television plans to bundle program and its spin-offs, Law & Order: Special Victims Unit and Law & Order: Criminal Intent, into one deal worth over $550 million annually, which would make it most lucrative entertainment agreement in television history; NBC might try to purchase Universal Television in lieu of negotiating with company; photos (M)