Photo courtesy of Alik Keplicz/AP Saturday is invariably both the best and worst day of the entire festival. It's the best in the sense that there is no shortage of high-profile movies, events and parties to attend. It's the worst in the sense that everyone--and I include the entire under-25 population of Salt Lake City--knows this. Saturday simply has the most intense crowds of the entire festival. It's the perfect day to avoid Main......