A deck I created for my girlfriend.
It is based on a large collection of (supposedly) real past TOEFL exams (including Listening part transcripts) from the years 1997-2005, amounting to over 800000 words in total. From this I picked out the ~1200 most frequently occurring words, omitting words that were "too easy". Then, using a script, I obtained the word definitions from the OS X built-in dictionary and formatted for Anki.
This deck still contains many easy words, but it should be useful as a check that you know the most frequent TOEFL vocabulary.
Enjoy!