Things to help a 24 hour flight go faster?

[snowbank]

I'm flying to Thailand soon, and with the flights it'll take about 24 hours to get there. I was thinking about maybe buying a dvd player and buying like 20 movies before I left, but I heard they only last for 4 hours without the battery in them being recharged. any way around that?(i thought of buying a bunch of rechargeable batteries but heard they are pretty expensive)

any other ideas?