There was the show put on by LD and BCL at the Li Ning launch in US, a couple of years ago.
At the Japan Open every year, it has become customary for some players to set up a fun and engaging exhibition match, which also includes spectator participation at some point. Rexy has always been good for laughs and very sporting.
Overall however, the energy and spontaneity and pure exhibition aspect does seem kinda dull with most badminton pros. They give the impression of even taking their fun very seriously!