NEW YORK -- David Hyde Pierce returns to TV this spring playing a familiar part — an erudite man who adores fine food, wine and art. But this has nothing to do with “Frasier.”Pierce is playing Peter Child, husband and chief cheerleader of Julia Child, whose warbling, encouraging voice and able hands brought the intricacies of French cuisine to American home cooks through her TV series and books.“These are two people of great depth, of great complexity of character, who found each other, and I think we all are luckier for it,” said Pierce.