Show” host Jimmy Fallon will cross the street from his NBC headquarters to offer support for CBS rival Stephen Colbert on Monday, The Post has learned. Fallon and a handful of

ABC’s Jimmy Kimmel interrupted his summer vacation to show support for fellow late-night host Stephen Colbert following the announcement Thursday that CBS will be ending The Late Show with Stephen Colbert — and the Late Show franchise altogether — at the end of the upcoming 2025-26 season.