OK, I had every intention to read this paper first and then do a report on it afterwards. But y'know, work and life got in the way, and the paper is still on my desk and remained unread. So I'm going to just highlight it here and point to the link at the IoP website now so that it is within the 30-day online print window, and you can get the paper yourself for free (upon registration).
Abstract: In the conventional interpretation of quantum mechanics the interference of particles in a two-beam interferometer is closely related to the problem of which-way information. One of the mysteries of quantum mechanics relies on the assumption that the wavefunction of each photon propagates simultaneously along both classically allowed paths, and that interference arises as a consequence of the indistinguishability of those paths. Any attempt to obtain which-way information by putting individual labels on the photons in each pathway inevitably destroys interference. However, even in cases in which the photons carry which-way labels, it is possible to erase those labels after the particle has left the interferometer. The erasing process (partly or completely) destroys the which-way information, and thereby restores interference. This phenomenon is known as quantum erasing. Here we present a lecture demonstration experiment of quantum erasing based on a Mach–Zehnder interferometer operated with single photons.
T.L. Dimitrova and A. Weis, Eur. J. Phys. v.31, p.625 (2010).
These authors have published another paper that I liked and highlighted before on the so-called wave-particle duality. I'm guessing this is as good as the previous one, but like I said, I haven't read it yet. But that shouldn't stop you from looking over it! :)