Jay Leno is a comedian, actor, writer, producer, voice actor, and television host. He was the host of NBC's "The Tonight Show with Jay Leno" and currently hosts "Jay Leno's Garage".Jay Leno is a comedian, actor, writer, producer, voice actor, and television host. He was the host of NBC's "The Tonight Show with Jay Leno" and currently hosts "Jay Leno's Garage".Jay Leno is a comedian, actor, writer, producer, voice actor, and television host. He was the host of NBC's "The Tonight Show with Jay Leno" and currently hosts "Jay Leno's Garage".