@http://stackoverflow.com/questions/184618/what-is-the-best-comment-in-source-code-you-have-ever-encountered:

// 
// Dear maintainer:
// 
// Once you are done trying to 'optimize' this routine,
// and have realized what a terrible mistake that was,
// please increment the following counter as a warning
// to the next guy:
// 
// total_hours_wasted_here = 42
// 

/**
 * Always returns true.
 */
public boolean isAvailable() {
    return false;
}

long long ago; /* in a galaxy far far away */

// hack for ie browser (assuming that ie is a browser)

// TODO: Fix this.  Fix what?

/*
after hours of consulting the tome of google
i have discovered that by the will of unknown forces
without the below line, IE7 believes that 6px = 12px
*/
font-size: 0px;

// Catching exceptions is for communists

// If this code works, it was written by Paul DiLascia. If not, I don't know
// who wrote it