Panasonic DVD-LS91 Portable DVD Player
The best portable DVD player for your girlfriend
I bought this to use on my honeymoon.  My fiance tried it out flying from the East Coast to the West Coast for her bachelorette party and totally loved it.  The battery lasted for two movies easy, it was small, and the screen adjusts great for an airline seat.  My fiance hates all my technology stuff but loves this DVD player and says she likes it more than me.  Don't worry about complaints about the resolution - on a small screen it doesn't really make a difference - only on text when it first starts can you tell it isn't high resolution.  I find that with it plugged in, turning the brightness to +5 and adjusting the color to +2 or 3 produces a great looking movie.  Also this DVD player fits any type of format to the screen area as some others like the Toshiba SD-2800 do not.  I also stopped by a Best Buy and it was the brightest richest colored screen on a sunny day in the store by far.    Highly recommended A++    One more note - you HAVE to get the Panasonic noise cancelling headphones RPC-H300 that are now about $75 even though they retail for $199 to go with these - they ROCK!  It makes the DVD player a perfect kit - my now Wife is taking them with her with the DVD player.  I found them by accident - and they can't be beat, the cord is removable, they come in an awesome case that you can use to pack the DVD player accessories if careful - are powered by a single AAA battery - are amazingly comfortable, block out the sound - and match the DVD player perfectly.