I remember a paper that asked participants to note down the last two digits of their social security, and subjects anchored themselves to that (statistically significantly- one of the authors was Dan Ariely).
Do you have a link? I am very skeptical that merely tossing out large-sounding numbers during an interview would have any influence on your likely salary range. In situations like that, your potential employer usually has a preconceived idea of what a "reasonable" salary for the position is; intuitively, you'd need to make a fairly strong suggestion to get them to anchor on a different figure (rather than, say, the salary they are already paying to other employees in a similar job function).