The August 2005 issue of the Association of Business Trial Lawyers Report (San Diego chapter) ran an article called "Has the Class Certification Inquiry Changed Due to Proposition 64?"
Another trial court tentative ruling on Prop. 64 retroactivity is accessible here. (Eustis v. Advanced Laser Clinics of California, Sacramento County Superior Court, case no. 04AS03204, Judge Thomas M. Cecil.)
In last Friday's paper, San Francisco Chronicle columnist David Lazarus mentioned section 17200 by name in his report on "The War Between The Stickers" — a possible UCL violation by a water heater repair company. (I think I got one of those stickers.)