Update: Several people have sent me the link to the Westlaw version of Keenan's article that is cited in this column by John Dean (of Watergate fame) [scroll about half-way down]. I am unsure, however, of the legality of this Hong Kong-based link to Westlaw--and would not want to rely upon John Dean as my sole source of legal expertise. If you have a knowledgeable opinion about this, feel free to email me. It would be useful to know.
Update: Princeton poli sci whiz Keith Whittington (who will be visiting at Texas law school this fall) writes to recommend this article: Bradley Canon, "Defining the Dimensions of Judicial Activism," Judicature 66 (1983): 237.