This is a listing of frequent English loanwords in Japanese.
The aim is to make learning English easier for Japanese students but the inverse should be true.
Of course the Japanese have a unique way of pronouncing them and have sometimes changed the meaning but the shared vocabulary makes for an interesting starting point.
http://iteslj.org/lists/Daulton-BasewordVocabulary.html
I'm sure I came across a listing in katakana once but I lost the link and haven't been able to find it again.