This is a really good video. Here is a simple timeline of what it is all about, so people can jump to what they would find interesting:

23:43 "It really is incredible that we can go close to one order of magnitude" (to C)

26:00 Lisp code is faster than optimized C (quantum) programs when running on the QVM. For non trivial benchmarks (...) {Lisp faster} on an average of 40% percent.

30:00 quick explanation of quantum machine code

33:06 What is the team dynamics of using Lisp? "Condescencion: Lisp's number one enemy" (fun part)

"Some time between 2 and 6 decades ago, Lisp invented approximately all of the popular things in programming, some of which are just starting to make an appearance [long list of features follow]"

Really fun part follows.

35:41 things Lisp programmers tell the other programming teams

36:40 Interesting, beautiful comparison of using Lisp versus doing calligraphy with calligraphy pens.

41:21 Presenting internship program at Rigetti. Stressing the importance of first having a SBCL, Emacs, Slime, Paredit, and Quicklisp, before thinking how writing productive Lisp looks like.

43:33 Comments of interns after the internship, favorable to Lisp, as well as unfavorable comment. (Fun part here)

51:00 Explanation of what quantum computing is all about