LG Electronics Japan recently released the DP171 Portable DVD player. 
The device comes a swivel-type LCD which allows viewing from 7 different angeles. Its also made especially for sharing and includes two headphone terminals.
Aside from DVDs (compatible with DVD -R, -RW, -R DL, +R and +RW) the DP171 can also play DivX, MP3, WMA and JPEG Files. LG DP171 Portable DVD Player : MobileWhack.com