I use the java IDE IntelliJ IDEA and one of the features I like is that there's no saving. Everythings's always saved and you just use history navigation. I tend to have both editors open and I'm always forgetting to save in VS.
I'm running vs 2008 with resharper 4.5 but as far as I can tell this isn't achievable or configurable (without writing my own plugin).
Any suggestions?