Green Lantern holding back a solar flare long enough for the team to put up the intangibility field.
The League finally confronts the Legion. Bonus points for Superman calmly saying "Take them."
It's only mentioned, but Superman could move the Earth if he wanted to.
Along the same lines is him reaching Earth when the flare travelling at the speed of light is barely visible from Earth at that point. (Of course, if it's traveling at the speed of light, it wouldn't be visible until it had already arrived)