"American Masters" profiles Leonard Bernstein (right) on what would have been his 80th birthday. Airing at 8 on Channel 19, this two-hour tribute to the legendary conductor and teacher was perhaps America's greatest proponent of the arts. And he was the inspiration behind arguably the two high water marks in commercial TV, "Omnibus" and his "Young People's Concerts. " Elsewhere on the dial, several former cast members reunite and another doctor slips into a coma as "Chicago Hope" airs its 100th episode at 9 on Channel 5. Drew Carey is roasted by the Friars' Club in a TV-MA special at 9:30 on Comedy Central.

