I don't know if anyone has pointed this about, but there are a couple of eastereggs in my region 2 DVD. The first one is a public announcement by David X. Cohen (hilarious stuff, Dave) and the second is a table reading.
I suggest you use a computer with a DVD drive to find them (I tried finding them on my DVD player afterwards and couldn't access them), the message is activate by clicking the magically appearing x-mas hat on the right, and the table reading by clicking on the image of bender and santa.