Adults doing helium never gets old and when one of them is Alan Rickman, he of the deep, distinctive voice, it's particularly good.
Following in the footsteps of Helen Mirren before him, Rickman obliged his host Jimmy Fallon by sucking on some helium and talking about Harry Potter.
Fallon made reference to the fact that he and Benedict Cumberbatch had had a 'Rickman-off' on a previous show in which they each did their respective Rickman impressions.
Check out Rickman on helium in the first video and the Rickman-off in the second...
Kirsten Wiig has continued a fine tradition of turning up on The Tonight Show dressed as someone she knows nothing about. But in becoming a rather less confident Daenerys Targaryen she bravely risked the wrath of fantasy fans everywhere.