If you hit a Cucco 10 times as Link in either his human or wolf form, you'll be able to control the chicken for several seconds. You can do this as often as you like.
The Mushroom Kingdom
Previous Zelda games have included nods to the Super Mario series, and this one is no exception. Pay especially close attention to Fyer, the clown-like fellow who operates a cannon in the Lake Hylia region. Examine his sleeve and you'll see the image of Bullet Bill, a popular enemy featured in Super Mario Bros. and many subsequent games in the series.
You would of course expect to find plenty of Zelda-related art in The Legend of Zelda: Twilight Princess HD, what with it being an actual Zelda game. Less expected, however, is a special new painting (unique to this edition) that you can discover in Castle Town. Visit Chudley's shop in Hyrule Castle Town and check along the walls. You should find a painting that depicts the grassy Hyrule Field, as featured in early video footage of the upcoming Zelda title for Wii U.