Makeup free Amy Poehler flashes a cheeky grin after working up a sweat at a yoga class Down Under By PENELOPE KILBY FOR DAILY MAIL AUSTRALIA Published: 05:06 EDT, 14 June 2015 | Updated: 06:04 EDT ...

Grin and pair it: Our Smile Tracker loves to find the funny. BBC R&D has created the Smile Tracker tool to help showcase the great comedy on BBC iPlayer.