finally, she made us all laugh, but betty white also led a trail blazing life and career joe fryer with a preview of tonight s tribute here on nbc. reporter: ask those who knew her best, they ll tell you the betty white we saw on camera is just like the one off. there s no way i can say thank you enough, guys. reporter: like in this behind the scenes moment from hot in cleveland. we love you reporter: or this blooper. once you go blackberry. reporter: where no one could keep a straight face. such treasures are sprinkled throughout tonight s nbc special, celebrating betty white, america s golden girl. features untold stories from famous