WASHINGTON, Jan. 10 - The Supreme Court confirmation hearings of Judge Samuel A. Alito Jr. were supposed to be about the judge, but on Tuesday it sometimes seemed as though somebody forgot to tell the senators on the Judiciary Committee. The lure of 50 cameras and the captive audience in the Senate Hart Office Building appeared too much of a temptation for some of Capitol Hill's windiest lions, who began by promising not to run a marathon session of questions, then did so anyway. At one point Senator Edward M. Kennedy, Democrat of Massachusetts, was even granted two extra minutes...