In one of the cutscenes from the first game, Jazz hides from Devan in a chest. When Devan first opens it, Jazz kisses him. The second time Devan opens the chest, Jazz gives him a bomb that explodes.
A lot of Jazz and Spaz's idle animations are funny. Examples include:
Spaz eating the bird that appears out of nowhere and lands on his paw.
The caged bird has its own idle animation. It stops flying and it looks around funny.
During the ending of the second game when Devan reverts from his Demon form to his normal self and cringes sheepishly as Jazz and Spaz prepare to stop his plans from succeeding.
If the player uses Spaz's Sidekick while super speed is activated and they hit a wall, Spaz's face will look goofy.