resignations

Recently, I've been fortunate enough to have a friend asking me to assist him in writing a resignation letter. I've never resigned from any jobs before - you can say that this is not really my cup-of-tea, but I thought this can be fun.
 
So I came across several styles of resignation letters, from the extremely simple ones to the  casual yet elegant ones. These have been interesting finds - hey, there's even a company in the UK that provides resignation consultation services. I love their slogan: "where do you want to resign from today?"
 
Anyways, the key concepts behind resignation-letter-writing are:
 
1. to notify that you're resigning, when you're resigning, and what it is you're resigning
2. that's it.
 
Everything else that they need from you need not be explained in writing.
 
So in the end, I settled for this:

July 26, 2004

[the company]
[company address]

LETTER OF RESIGNATION

Dear [your superior's name],

This letter is to notify that I am resigning my position of [your position]  from [the company] effective [your last date]. I want to express my gratitude for a rewarding employment experience with [the company].

Sincerely,

[your name]

cc: Human Resource Department