I've enjoyed reading all the replies here, but
revdiablo makes a couple of important distinctions.
My original intent in this mediation falls somewhere between "should we follow good practices in whatever code we right?" and "shouldn't we be using the most up-to-date methods for HTML mark-up as we would do in Perl?". However, I never said "tricks." XHTML and CSS are not tricks, they are new standards and options for newer browsers, the myriad of incompatibilities and bugs notwithstanding (IMHO,in a perfect world, CSS would be a non-brainer). I would never suggest "the latest" over the one that makes the most sense for the application.
I am now building sites that are table-less, for instance, but never at the expense of the design, functionality, deadline, or budget. If I can do it, and it works in the right browsers, I find CSS faster, cleaner, and easier.
It didn't take me long after coming to PM to realize that my Perl code was terrible. And since then I have learned tons about making it better, on all counts. I feel that the monks here really push themselves as Perl coders, and to make things work. Shouldn't we push ourselves even if it's "lowly" HTML?
Update: Added quotes to "lowly"--I don't think it's lowly, but serious coders might.
—Brad
"A little yeast leavens the whole dough."