The newly-released “Snakes on a Plane” DVD finally arrived yesterday. In case you didn’t see the movie in theaters, it is just exactly what you would expect: snakes, snakes, Samuel L. Jackson, and more snakes. There’s a hint of plot, some hot simulated sex, and a bit of dialog, but mostly it’s about the snakes. The extra features alone were worth the price of the DVD. There’s a short feature on the snake stars of the movie called “Meet the Reptiles.” Jules Sylvester, the snake-handler for the movie, worked on the “Born Free” TV show in the ’60s. The snakes are named in the script – the 17-foot Burmese Python called “Kong” in the movie script is named “Kitty” in real life. You are what you eat, I suppose. If you’re a hard-core “Snakes” fan, there’s even a puzzle book, “ Snakes on a Sudoku .” If you’re a sudoku fan, you have to try these. Ins...