noob question on analogRead fluctuations

Basically yes. What I am saying is that:-
analogRead(0);
delay(100);
analogRead(1);

is just like :-
analogRead(0);
analogRead(1);

As far as high impedance readings go but:-

analogRead(0);
delay(100)
analogRead(0);
analogRead(1);
delay(100)
analogRead(1);
Is what you want to do if you want to allow the input capacitor to charge because of a high input impedance.