How is “now for” used?

In Ralph Breaks the Internet (2018), one line is: “now for six hours...”

Which movie is “now for” from?

The clip at the top of this page is from Ralph Breaks the Internet (2018).

now for six hours...

8 作品で登場 · 1 本目

イディオム

used when turning to a fresh activity or subject

146 本の映画に登場

now for sb / sth
used when turning to a fresh activity or subject
And now for some travel news.

定義：Oxford Advanced Learner's Dictionary 第 9 版