TALLADEGA, Ala. _ Dale Earnhardt Jr. has been ridiculed for his lousy 2009 season, but there is still one place that treats him like a hero - Talladega, Ala. I saw, heard and felt the power of Junior Nation firsthand during this Sunday's Amp Energy 500.   As I walked among the throngs of race fans this weekend, Junior's colors were most prevalent, followed by Jeff Gordon and Kasey Kahne. Under closer inspection, however, most of those Kahne colors turned out to be Junior'...