In what I think is the most intense extended acting he’s done on Late Night, Seth introduced the interns that have been working on the show.

On Kimmel, his brother did his Gavin Newsom impression and Seth got to play big brother (well, he is, but was also acting).

(The Newsom part starts at 8:45, Kimmel posts long clips instead of breaking them up.)

Finally, on Corrections, Seth goes all in on the whispering bit in one of the shortest Corrections ever.