Free Idea - Backward in Time

xkcd #1017

Randall Munroe has outdone himself. Today's xkcd is a fascinating exercise in backwards time travel, and it even links to a spreadsheet so you can tweak the variables as you like.

How long before someone takes this to the next logical step and builds a little web app to scroll through time automatically, pulling "On This Day" data from Wikipedia?

I'd love to sit down at the beginning of a 1-hour meeting, enter today's date and my birthdate, start the timer, and watch the historical events of my lifetime scroll by.

It can't be that hard, can it?

For a smart person, I mean.