ABC expands 'Lost' finale by extra half-hour!

Exclu: There's more "Lost" left than you think.

The producers of ABC's hit drama have shot so much crucial material for the show's hugely anticipated series finale that the network has agreed to extend the last episode by an extra half-hour.

When the "Lost" finale airs on Sunday, May 23, the episode will run from 9 p.m.-11:30 p.m. The overrun will push back local news, with the previously announced "Jimmy Kimmel Live: Aloha to Lost" post-finale special now airing at 12:05 a.m. ABC is expected to announce the plan on tonight's episode of Kimmel.

Executive producers Carlton Cuse and Damon Lindelof just completed postproduction on the finale -- titled "The End" -- on Monday night. Both sent out identical tweets: "We're done. Amen."

Lindelof recently told THR that the crew built all-new sets for the finale and promised the ending would prompt more questions.

The supersizing of the finale is the latest adjustment to what might as well be called "The 'Lost' Weekend." ABC is airing an "enhanced" (pop-ups) version of the show's original two-hour pilot on May 22. On Sunday there's a two-hour retrospective titled "Lost: The Final Journey," followed by the finale, then the local news (which was preempted in the first-blush recounting of this plan) and Kimmel post-show.