On disc 2 of the Disney/Pixar feature film Toy Story 2, there is a hidden funny scene featuring Jessie's song. This is available with the Special Edition (2 discs) version of the DVD.
From disc 2, look at title page menu carefully to spot a Star in the lower right hand corner. Select this Star. You should now see a scene with Jessie's song being played and a rather unfortunate incident involving a motor vehicle.