[Note: there is no in person annual emacs conference; but if there was, the above image would not come close to doing it justice.]
Here's a link to the Emacs 2021 Conference page: https://emacsconf.org/2021/
Following for each presenter are links to their presentation page and video. [I hope you can see the ]
1. Sacha Chua - Emacs News Highlights
https://emacsconf.org/2021/talks/news/
https://media.emacsconf.org/2021/emacsconf-2021-news--emacs-news-highlights--sacha-chua--main.webm
2. Case Duckworth - The True Frownies are the Friends We Made Along the Way: An Anecdote of Emacs’s Malleability
https://emacsconf.org/2021/talks/frownies/
3. Jean-Christophe Helary - Emacs manuals translation and OmegaT
https://emacsconf.org/2021/talks/omegat/
4. Daniel Rose - GNU’s Not UNIX: Why Emacs Demonstrates The UNIX Philosophy Isn’t Always The Only Answer
https://emacsconf.org/2021/talks/unix/
5. Grant Shangreaux - Emacs and Montessori Philosophy
https://emacsconf.org/2021/talks/montessori/
6. Greta Goetz - Emacs as Design Pattern Learning
https://emacsconf.org/2021/talks/pattern/
7. Protesilaos Stavrou - How Emacs made me appreciate software freedom
https://emacsconf.org/2021/talks/freedom/
8. Philip Kaludercic - How Emacs made me appreciate software freedom
https://emacsconf.org/2021/talks/nongnu/
9. Dhavan (codingquark) - Manual Package Management in The Era of Repositories - Why and How
https://emacsconf.org/2021/talks/borg/
10. Kevin Haddock - Introducing N-Angulator
https://emacsconf.org/2021/talks/nangulator/
11. Spencer King - Typesetting Gregorian Chant with Emacs
https://emacsconf.org/2021/talks/gregorian/
12. Gabriele Bozzola and Evgeny Zajcev - telega.el and the Emacs community on Telegram
https://emacsconf.org/2021/talks/telega/
13. Stefan Monnier - A day in the life of a janitor
https://emacsconf.org/2021/talks/janitor/
14. Noorah Alhasan, Joe Corneli, Raymond Puzio, Leo Vivier - Emacs Research Group, Season Zero: What we did together with Emacs in 2 hours a week for a year
https://emacsconf.org/2021/talks/erg/
15. Greg Coladonato - One effective CS grad student workflow
https://emacsconf.org/2021/talks/cs/
16. Philip Beadling - Using Org-Mode For Recording Continuous Professional Development
https://emacsconf.org/2021/talks/professional/
17. Jan Ypma - Creating technical API documentation and presentations using org-babel, restclient, and org-treeslide
https://emacsconf.org/2021/talks/tech/
18. Tom Gillespie - Org as an executable format
https://emacsconf.org/2021/talks/exec/
19. Karl Voit - The use of Org mode syntax outside of GNU/Emacs
https://emacsconf.org/2021/talks/org-outside/
20. Daniel German - Using Org-mode to teach programming
https://emacsconf.org/2021/talks/teach/
21. Asilata Bapat - Babel for academics
https://emacsconf.org/2021/talks/babel
https://media.emacsconf.org/2021/emacsconf-2021-babel--babel-for-academics--asilata-bapat--main.webm
22. Ahmed Khaled - Managing a research workflow (bibliographies, note-taking, and arXiv)
https://emacsconf.org/2021/talks/research
23. Blaine Mooers - Reproducible molecular graphics with Org-mode
https://emacsconf.org/2021/talks/molecular/
24. Bala Ramadurai - Finding Your (In)voice: Emacs for Invoicing
https://emacsconf.org/2021/talks/invoice/
25. Adolfo Villafiorita - Budgeting, Project Monitoring and Invoicing with Org Mode
https://emacsconf.org/2021/talks/project/
26. Mehmet Tekman - Productivity Dashboards with Emacs and Kindle
https://emacsconf.org/2021/talks/dashboard/
27. Andrea - Emacs with Nyxt: extend your editor with the power of a Lisp browser
https://emacsconf.org/2021/talks/nyxt/
28. John Wiegley - Emacs development updates
https://emacsconf.org/2021/talks/dev-update/
29. Nicolas P. Rougier - On the design of text editors
https://emacsconf.org/2021/talks/design/
30. Dmitry Gutov - Optimizing Emacs Lisp Code
https://emacsconf.org/2021/talks/faster/
31. Ethan Leba - Tree-edit: Structural editing for Java, Python, C, and beyond! -
https://emacsconf.org/2021/talks/structural/
32. Erik Anderson - Yak-shaving to a UI framework
https://emacsconf.org/2021/talks/ui/
33. Andrea - Moldable Emacs, a step towards sustainable software
https://emacsconf.org/2021/talks/mold/
34. Laszlo Krajnikovszkij - Extending the “model” of Emacs to other applications
https://emacsconf.org/2021/talks/model/
35. Andrea Corallo - Emacs Lisp native compiler, current status and future developments
https://emacsconf.org/2021/talks/native/
36. Ian Eure - Old McCarthy Had a Form
https://emacsconf.org/2021/talks/form/
https://media.emacsconf.org/2021/emacsconf-2021-form--old-mccarthy-had-a-form--ian-eure--main.webm
37. Stefan Monnier - Turbo Bindat
https://emacsconf.org/2021/talks/bindat/
https://media.emacsconf.org/2021/emacsconf-2021-bindat--turbo-bindat--stefan-monnier--main.webm
38. Eduardo Ochs - Test blocks
https://emacsconf.org/2021/talks/test/
https://media.emacsconf.org/2021/emacsconf-2021-test--test-blocks--eduardo-ochs--main.webm
39. Mohsen BANAN - Perso-Arabic Input Methods And Making More Emacs Apps BIDI Aware
https://emacsconf.org/2021/talks/bidi/
40. Matthew Zeng - Emacs Application Framework: A 2021 Update
https://emacsconf.org/2021/talks/eaf/
41. Shane Mulligan - Imaginary Programming
https://emacsconf.org/2021/talks/imaginary/
42. Fermin MF - CLEDE the Common Lisp Emacs Development Environment
https://emacsconf.org/2021/talks/clede
43. Bastien Guerry - How to help Emacs maintainers?
https://emacsconf.org/2021/talks/maintainers/
44. Fermin MF - How to build an Emacs
https://emacsconf.org/2021/talks/build/
https://media.emacsconf.org/2021/emacsconf-2021-build--how-to-build-an-emacs--fermin-mf--main.webm
45. David Wilson (System Crafters) - M-x Forever: Why Emacs will outlast text editor trends
https://emacsconf.org/2021/talks/forever/
"No grand idea was ever born in a conference, but a lot of foolish ideas have died there."
~ F. Scott Fitzgerald.