The nerdiest thing I've ever done in a flight sim was being bombardier lead plane in a group of four Ju-88 in Il-2 1946. It was on the
www.warbirdsofprey.org "Spits vs 109s" full realism server...
Before that I spent days working out a formula, and on the flight I calculated the bombsight release angle with a 1940's slide rule. =)