Is authoritarianism (too a limited degree) good?
Ideally authoritarianism is important in close-knit tribal type groups such as how early humans were. On any larger scale, the potential for corruption and harm to the individual rises.
It depends what you mean by a limited degree. Do you mean that some checks against the rule of the masses are appropriate? If so, then yes. Do you mean that a literal dictatorship has a certain appeal? If so, then no.