Understanding Italics

See this fun video of some animals trying to make a commercial using italics to help emphasize a key word in the commercial's script:
http://pbskids.org/electriccompany/#/Videos/
Choose the Pets Home Alone: Woof Woof Crunchy Yummy Dog Food Contest video
http://pbskids.org/electriccompany/#/Videos/
Choose the Pets Home Alone: Woof Woof Crunchy Yummy Dog Food Contest video