Barbara Streisand is a knockout as Dolly Levi, and Hello, Dolly!, is the blockbuster musical you'll want to see her in again and again. The famed plot involves Dolly, a young widow and professional matchmaker who sets her sights, and whatever else she can muster, on conquering tight-fisted Yonkers merchant, Horace Vandergeider, beautifully played by Walter Matthau.