they re eyeglasses that have three different intensities of blue and white light. you can wear it with contacts and eyeglasses and you can wear it just about everywhere. on an airplane, while you re reading, or wherever you feel comfortable. the first lady of late night, maybe michelle obama, she made her final talk show appearance just days before the end of her husband s term. a lot of people hoping it s not the last time that we see her as a guest. mi shchelle obama. reporter: her days of dancing across our skreercreens are num. cool enough to run a potato sack race in the white house with jimmy fallon. and now she s reached the finish line as the first lady of late night. it is nuts. i feel like crying right now and i didn t think reporter: her last talk show