We've been tinkering and twatting about in the lab this week, and we've come up with all sorts of weird gadgets and gizmos aplenty in our pursuit of the World's Worst Inventor. Joined by comic, writer and antisocial behaviour officer Nick Pettigrew, we delve deep into the minds of the likes of Dr Sir Nakamats - the man of many patents; Richard Pockrich - someone with too many ideas; and John McAfee - the antithesis of the computer nerd.