The HackerRoom MX is a co-working space for hackers in Mexico City. I gave a Common Lisp talk this last September to a few of the inhabitants there.
I’m putting the slides at http://gajon.org/otherstuff/lisp-slides/
If you are creating a similar presentation feel free to take whatever you want from my slides. I hereby authorize You to do whatever the hell you want with the content referred to above. Except that I took some parts from other places (always showing a link to the original source). If you use something from those parts you should include the link to the original sources as well.