I just wrote a little Python script that imports the vocabulary data from Paul Hemetsberger's dict.cc project into Leopard's Dictionary.app.
This is great if you need this fabulous online dictionary while on the move.
Update: A new and much easier installable version can be found here.
Screenshot of the dict.cc Plugin
The code is quick 'n dirty and some strings aren't processed correctly. This is compensated by the links to OS X's build-in New Oxford American Dictionary.
Regrettably dict.cc's license prohibits redistributing the vocabulary database. So, if you want to use Dictionary.app to translate words from german to english you'll have to build it yourself:
get my script (just email me, about 50k download it below)
I once attended a course "Funktionsstörungen/Dysfunctions" at Aachen University, that dealt with disorders of several functions of the brain and insights that can be concluded therefrom. A recent TED talk by Vilayanur Ramachandran picked-up that topic and is definitely worth watching.
dict.cc Dictionary Plugin
Use dict.cc’s german-english translation database as a plugin in Apple’s OS X Dictionary.App. Works offline and also supports Spotlight or the Dictionary Widget.
OS X Applikationen und Widgets
Eine informative Übersicht der meist kostenlosen kleinen und großen Anwendungen für OS X, die einem die Arbeit ungemein erleichtern. (in German)