Back in the day when I was a film student, I used to attend luncheons at Tiffen. For those who don't know, they are the premiere filter company for still photography and motion pictures. At these informal gatherings I learned all sorts of tricks about in camera color correction (81 EF anyone?), gradation, image enhancement, polarizing, etc.
Unfortunately for teachers/students these filters are expensive and are sometimes not available in the same sizes as prosumer cameras. They also require some in depth experimentation that pre-professionals are not always willing to do.
I recently found out that Tiffen has developed a digital suite of filters for use in Photoshop, Aperture, and Final Cut Pro. Tiffen DFX can be thought of as a toolkit that will encourage students to experiment. I can also see some nice applications in a Physics class - to teach about how filtration can affect light. And for the camera pro's out there, there's even a split diopter option that will allow you to re-create a shallow depth of field.
These filters are available for $100 for the still programs and $600 for FCP and well worth the investment. It's possible that you could even get an educational discount if you sent them a note from your school.
Oh, and if you're program is strapped for cash, here's a link to an article over at Creative Cow with some free Final Cut Pro plugins. Nothing as extensive as Tiffen's DFX, but some fun stuff.
