This script will allow you to set the start and end frame range of your shot and save that range, along with the ability to set a bookmark in your scene.
If you have any questions or comments feel free to head on over to my site JoshJanousky.com or shoot me an e-mail at Josh@JustJoshinMagic.com
To run the tool, save the timeRanger.py file and icon to your scripts and icon folders. Then drag and drop the install file into Maya. It will automatically add it to your shelf, along with the double click option