Remove the plastic overlay and you'll find a very cool metal box shaped like a manhole cover (an iconic image in the franchise). Pop the box open and the four DVDs are inside.

Disc 1: Teenage Mutant Ninja Turtles - I hadn't seen this movie since its original theatrical release in 1990. Looking back, it still has the same silly charm it had then. While the music and special effects are clearly dated, the turtle costumes remain impressive. Jim Henson's company worked on them, so it's no surprise that they stand the test of time. There is one delight in the movie that wasn't there initially: the role of a young gang leader is played by the then-unknown Sam Rockwell. It's definitely fun to see such a talented actor taking on an early role.

Disc 2: Teenage Mutant Ninja Turtles II: The Secret of the Ooze - Production values for the sequel went way up, with the movie as a whole looking and sounding a lot better. The turtles search for answers about the mysterious ooze that gives them their unique powers. Judith Hoag, who played April in the original, was famously replaced by Paige Turco, who perhaps doesn't have the same spunk but nevertheless feels like a better match with the role. Bonus points for David Warner as a villain and a cameo from Vanilla Ice, which is now entertaining in a whole different way.

Disc 3: Teenage Mutant Ninja Turtles III - This is generally considered to be the weakest entry in the series, as the turtles go back in time to the era of the Samurai. While it may not be the best of the films, you at least have to give the makers credit for trying to find a fresh angle for the third installment.

Disc 4: TMNT - By far, my favorite of the movies. This one, the most recent, was done using computer animation, which feels like a perfect fit. It's terrific, creating a moody, atmospheric New York for the turtles to run around in. The plot finds them taking on an evil industrialist who plans to unleash a collection of monsters upon the world. Name stars such as Patrick Stewart, Sarah Michelle Geller, and Chris Evans provide voice work for the characters. Finally, and in some ways, most importantly, TMNT has a nice message for kids about forgiveness and the power of teamwork.

As far as extras, the first three discs are kind of light on them - mostly just trailers and dull set-top games. TMNT has the most extensive set, including deleted scenes and storyboards.

The 25th Anniversary Collection DVD also comes with four Teenage Mutant Ninja Turtles eye masks (yes, I tried one on; no, I'm not posting a picture of it) and a sheet of temporary tattoos. On the whole, it's a pretty impressive package for the TMNT fan.