There are very short interviews with some of the cast of Star Trek: Voyager on different subjects. To access the Easter Eggs, go to the special features only disc, and play around with the arrows until you find a part of the ship that is not lined up with a feature. There are about two, or three, maybe more.
Reviews: DVD Talk also has a review of
Star Trek: Voyager - Season 1 by Holly E. Ordway.