The Broncos star's off-colour joke was the sort of thing that would have had them slapping their thighs at a porn-and-prawn night in the 1950s, and as bad jokes go, it wasn't too bad.

Species of the phylum Cnidaria – the classic jelly – have existed in something close to their current form for at least 565 million years; Ctenophora, the comb jellies, are not much younger.

Its highest-concept blockbuster to date, Inside Out (Disney, U), dares to literalise this process, guiding viewers’ feelings by personifying them, placing them at the centre of a narrative they’d usually accompany.

One particularly exciting sequence shows how members of Greenpeace, a Canadian conservation group, defend whales fleeing from a huge Soviet whaler.