Prevented the Great Hill Valley Fire.

Restored Edna's memory.

Treated Desert Edna to an algae cake.

Complete the glass house maze without going back up the stairs.

Impersonated three people over the phone.

Marty and Emmett head to the Expo.

Broke up Emmett and Edna.

Got Trixie ready to make Edna jealous.

Offered algae cakes to everyone.

Crafted a mind map of Emmett that reveals him to be a "Degenerate Criminal."

Get a good look at Trixie's postcard.

Escaped from Marty's cell.