Asteroid-induced mass extinctions(98% of all life wiped out) come something like once every 5 million years, so if you look at the fossil record we're about due for one. But don't worry, by the time a stadium-sized rock starts hurtling our way we'll have anti-meteor nuclear tipped missile defense networks orbiting this planet. So we're gonna need a bigger reset button. And of course you know it's impossible to reset our technological level in the world, since our records will remain long after we die, lying in wait for new caretakers to pick up where humanity left off.
There's another science fiction movie just waiting to be made...
The plot is, humanity is dead, wiped out completely off the face of the earth from a space-born disease, ummm, kinda like 12 monkeys except everyone really is dead, no underground survivors. After 30 or 40 million years, a new intelliegence evolves on Earth, this one's not mammal though, it's reptilian or amphibian, and they find remnants of mankinds culture, learn to dig up our artifacts and read the instruction books and rebuild our technology. Kinda like how we have rebuilt ancient greece in our architecture. Except the twist is, can they somehow not repeat the same mistakes we made - or some other cheesy moral like that.