Only available on DVD because Warner Home Video, the current distributor of the Dr. Seuss films, was not able to upscale any of them into high definition, was Dr. Seuss's Holidays on the Loose!.
On Disc 1 is Deluxe Edition of How the Grinch Stole Christmas (1966), with song selections, biographies of those who made the film possible, and more.
On Disc 2 are two half-hour films starring the Grinch -- The Grinch Grinches the Cat in the Hat and Halloween is Grinch Night. Also included is a trailer for Happiness Is... Peanuts: Snow Days.