Clover's song in "Blue Ribbon Bunny", and his dancing later on.
Desmond at the end of "Make Way for Miss Nettle". He's a Cowardly Lion that's had been trembling over his fears the whole episode (though that makes him all the more endearing), and by the end he finally faces his fears and tackles Miss Nettle out of the air! She still puts him in a bubble... but then we find out that he managed to steal her wand in an awesome moment of Badass Adorable.
Clover gets an epic The Dog Bites Back moment in "The Emerald Key" when he summons the woodland creatures of the forest to stop Mamanu.