Razib has a challenge: "If you had 10 words or less, what would you have the public master about evolutionary theory?"
Here's a short credo that I give to my students:
No evolution means equal offspring for everyone!
It's not exactly true, of course, since a population with no variance in reproduction can still evolve, drift will still fix alleles. Heck, even if they were clones, there would still be mutations! But it does get you started thinking about how hard it would be to have a population that doesn't evolve.
And that means that evolution is ubiquitous.
UPDATE (6-16-2006): A reader clearly wishing he was in Zagreb e-mails:
Try these 10:
Evolution means change; take it or leave it (nature does!)