Behind the Scenes:
From the disc's "Main Menu", press your Up button to highlight the word Merry. Now, press your Enter button and you will see a clip featuring the film's director Kirk Thatcher and Bill Barretta, the talent behind Pepe the King Prawen, Johnny Fiama and Bobo the Bear.
Reported by: ScottHanson

Deleted Scene:
The second Easter Egg is located in the "Special Features" menu. From here, press your Up button so that the berries in the holly are highlighted, and you will find a deleted scene with William H Macy.
Reported by: ScottHanson

Bonus Feature:
Finally, from the "Special Features" menu, select 'Muppet Biographies'. There, highlight "Special Features" and navigate over to the right to highlight Piggy's ring. This will show you a 3-minute reel of Kermit's recent Star unveiling on the Hollywood Walk of Fame with David Arquette.
Reported by: ScottHanson