Here is a useful accessory for your iPhone or iPod Touch, the iAngle iPhone stand, which you can use to hold your iPhone or iPod Touch in landscape mode, which would be ideal for watching movies.
The iAngle iPhone and iPod stand also has another useful feature, and you can use it to store your headphones when you are not using it as a stand.
This might be a useful accessory for traveling, if you want one they are available for $9.99 you can find out more details over at iAngle.
