The preview for "Brothers" shows Matthew McConaughey and Woody Harrelson playing themselves as they discover they might actually be related.
https://www.foxnews.com/outkick-culture/first-preview-drops-brothers-true-detective-stars-reunite-apple-tv-september
https://www.foxnews.com/outkick-culture/first-preview-drops-brothers-true-detective-stars-reunite-apple-tv-september