The people in Doonesbury are never quite what they seem to be. Whether it's a hockey player from the Bronx cursing in French -Canadian dialect to intimidate the opposition, or a social worker who tutors disadvantaged ghetto children purely for the money, the Walden Commune crowd seems to suggest the most astonishing of contradictions. Not that they are all insincere; on the contrary, a vigorous sincerity is among the most engaging traits of Commune founder Michael J. Doonesbury. In fact, it is probably his honesty which best explains why his advances towards every woman he meets are usually characterized by all the subtlety of the 1971 Laos incursion. As every Doonesbury reader well knows, Michael is obsessed with the delusion that he is God's gift to women. But at the San Francisco chronicle put it in a recent column, 'He isn't.' See for yourself.