"Thank you, thank you, thank you very much, I'm thrilled to be back here hosting Saturday Night Live," Smith announced, his hair styled exactly like Ferrell's. Will Ferrell and Chad Smith standing together in matching blue suits on Saturday Night Live Season 51 Episode 20.

Will Ferrell is serving as host and Paul McCartney will perform as musical guest

Paul McCartney was the night's musical guest.

Will Ferrell is live from New York once again, and he pulled a bit of a prank on viewers in his "Saturday Night Live" opening monologue.

Ferrell was there, but never quite displayed the go-for-broke energy that he’s known for in sketch comedy. Except in one skit, which was ultimately cut for time. I have a feeling, however, that it had less to do with time and more to do with the logistics of a skit featuring several very young and unpredictable kids airing at midnight.

Smith also served as musical guest Paul McCartney's drummer on Season 51 finale

In Season 51's final "Saturday Night Live" cold open, the ghost of Jeffrey Epstein paid a visit to President Trump, his "dear, close friend."

Have you ever stopped to consider—what if The Lord of the Rings series transformed into a musical? The beloved books by J.R.R. Tolkien have been adapted into movies, a TV series, and even a play… Why not a show full of song?

The character from Season 45's cut-for-time sketch returned to zing the Season 51 cast — with help from Molly Shannon.