If you have thought about printing out maps and putting push pins or sticker dots to represent all of the places your ancestors inhabited, save yourself the work and visit Ancestral Atlas:
This website is free to use. You simply upload your Gedcom file and the website takes over from there, plotting your ancestors onto maps. Little bubble-pins appear to show you who lived in that location and what events took place there.
Give it a try, but not until you have LOTS of time to lose yourself in the fun of mapping your genealogy!