Ability to Audit Keystrokes/Entries/Changes

It would be beneficial to be able to see who and when a change was made on an account; i.e. if someone changed the lead source or updated the price, etc a manager could look at "account history" and track who and when any changes were made.  As an admin, you should be able to audit this information without having to go through tech support on a case-by-case basis.