Guys, check this app out - for the DROID X its amazing... Put your movies on the SD card and this will play them. You need the 7ARM version. It plays DIVX, XVID etc. any video type. Just download the movies/shows etc. and put em on your SD card. Works great on the X!
Pro Tip - Hit the back button when asked about validating or w/e - and just navigate to your video and play. Profit. I just found this app. and am in love.