Jonathan Nash
One of my favourite words.
It's silly, it makes exactly the right sound and there's a bit in one of the Calvin and Hobbes books where he says "Sinister fiend!"
A splendid adjective I endorse unhesitatingly.
I agree wholeheartedly, though trace my own fascination with the term from a particularly vivid intro screen from the early eighties arcade game Robotron. Captivated by this at a clearly impressionable age, I spent many happy hours reciting the text to myself, and ever since have used both "sinister" and its cheery pal "ingenious" almost to the exclusion of all other adjectives. You see, in my mind they have similar, yet complementary meanings:
Dave Green