You know a gadget trend has reached mainstream America when old actors are talking about it on a late night talk show. In a watershed moment for health tech, two big showbiz personalities show unrestrained excitement for a new gadget they don’t quite understand but nonetheless love. Late night host David Letterman and professional neurotic Jeff Goldblum displayed the most delightful mix of mania and confusion for a popular step tracker, the Fitbit.

If you love Baby Boomers getting excited about technology, this clip is for you. If you’re happy for health tech going mainstream, this clip is for you. If you’re a fan of counting steps, this clip was made for you.

Watch. Enjoy.