rose herschel and andy shreve's. robert and susan rosenbaum. the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. ♪ [captioning performed by the national captioning institute, which is responsible for its captin content a accuracy.] announcer: major funding for "tell me more with kelly corrigan" is provided by the john templeton foundation-- inspiring awe and wonder-- and by the gordon and llura gund foundation. ♪ laughter is a weird, wonderful, and important thing. that awesome contraction in our diaphragm is also a buffer against heart disease, pain, and isolation. and when the laughs hinge on keen observation, we start to see who we are, how we are, and that we are not alone in our foolish self-importance or our desire to be included. since the late nineties, judd apatow has been reflecting a world back to us as the force behind "freaks and geeks," "40-year-old virgin," "knocked up," and "trainwreck"