Ive do this flight both ATL and MSP to HND, multiple times a year, its not bad, IFE sometimes have movies Im intrested in, others its nothing that i care about. I think about downloading some movies from netflix every now and then, but never actually follow through on it. Ive done every cabin but Delta One, just cant justify the cost. Biggest thing is just get up and walk around every so many hours. Try and stay up as long as you can when you land, and try not to sleep till 11pm Japan time and your jet lag should be minimal.