My truck is up there a little ways and it's hard as heck for me and the wife to get into the back.
This is when I really miss my Avalanche and the bumper steps.
Anyway so I installed one of these Traxion 5-100 Tailgate Ladder
It was super simple to install (Other than the screws they give you SUCK).
It works really well and makes getting in and out of the truck bed so much easier.