You could start one of those '5 handshakes' posts... Not as 'related' but as linked by something.
Doug Jackson shook hands with Henderson... Nah,,, toooooo easy.
Okay, let me think about this;
Doug Jackson was initially emplyed by Henderson
Henderson is the big boss of the IAC
One of the IAC members is Duvall
Duvall is French
The French have a military organisation called The Foreign Legion
One of the punishments the Foreign LEgion used was to bury their soldiers in sand
Ancient Egyptians buried their dead in sand
Daniel Jackson was an expert on ancient Egypt.
Easy!
Bet someone could do it in less steps! (but it's fun to drag it out!) :