A propos of #5, this from Dr. Haussler, professor of computer science:

    "He's unbelievable.  This program represents an amount
     of work that would have taken a team of 5 or 10 programmers
     at least six months or a year."
[download]

From NYTimes Tues 13 Feb 2001.
Talking about James Kent who, in 4 weeks, wrote code to integrate the Human Genome Project's data and thus stay in step with the attempts to do it commercially.

p