Camera straps come in handy if you don't need to use a tripod. I have the R strap and I love it... until I have to attach my camera to a tripod....
Check out this link to the Blackrapid camera strap.
I saw a similar strap in a German magazine, called sun-sniper.
I think this is a German product. It doesn't have any pockets on the shoulder pad like the R-Strap, but comes with a shock absorber. This one also has a steel wire version.
The regular camera strap version is available for about $55, and the steel wire version for $75.