In the visual studio Source Control Explorer window, I can see my own "add" operations, but do not see the "add" operations for other users. I can see all other operations (rename, edit, etc), but cannot see any add's.
Anyone know how to turn this on, or how to view add's otherwise?
I don't think there's a way to view other people's pending adds. The items shown in SCE represent the latest state on the server, modulo any changes that are pending in the currently selected workspace. In other words, if you switch to another workspace in the dropdown at the top, you won't even see your own pending adds.
Closest substitute I can think of is the "Team Members" feature introduced in the Fall '08 power tools. In short, you can quickly view anyone's pending changes (along with shelvesets & checkin history) by right clicking on their name in Team Explorer.