`` It 's wonderful . `` Jeopardy ! '' host Alex Trebek serves as parade 's grand marshal . The event is the culmination of a year in which more than 100 million people tuned into the popular game show on television. National Cherry Blossom Festival marks the arrival of spring .
`` Jeopardy ! '' host Alex Trebek serves as parade 's grand marshal . The event is the culmination of a year in which more than 100 million people tuned into the popular game show on television. National Cherry Blossom Festival marks the arrival of spring .