The first thing I do on installing newer Ubuntu releases:

apt-get remove coreutils-from-uutils --allow-remove-essential

(and similarly revert to the original sudo version)

Is avoiding the trial and error step advisable? Certainly it won't always give you a material with the desired property but how many times do those 'errors' have their own unique benefits? For example the search for a synthetic rubber gave us silly putty.

But you can use a gpo to rename the local administrator account across your domain or rename it on single machines via lusrmgr.

Copy and paste the insightful comments from http://hardware.slashdot.org/article.pl?sid=10/11/19/1931231 to boost your karma!

But really, what would be the ethical implications of eating lab grown human tissue?