This season’s network schedule is one of the lamest in recent memory. The only big winner so far is ABCs Home Improvement, which may explain CBS’s strategy this week. Last spring the network had some ratings success with tributes to The Ed Sullivan show, The Mary Tyler Moore Show and All in the Family. This weekend it recycles more golden oldies with another Sullivan special and tributes to M*A*S*H (see McLean Stevenson story, p.89) and The Bob Newhart Show (Sat., Nov. 23, 8 P.M., ET). It’s nice to see a good old show again, but isn’t that what syndication is for? A year from now, will we be treated to The Best of My Mother the Car?