This was the first Drupal site I built for White Hat Media (and the first for Code Brighton). Built in Drupal 5. Looking at it (and I can't believe I'm saying this 5 years on, I'm writing this in 2012), I think it still looks ok, some other sites have dated a bit, but I think the high quality photos help.
There's also a few interesting technical features such as a rudimentary localisation solution (There's a German language version of some pages). I think this was pretty basic in Drupal 5, language translation in Drupal has come a long way since then.
I didn't quite get the way the menus/breadcrumbs need to work in Drupal and had a multi-menu solution (it was the days before I discovered the essential Menu Block module!). Wasn't ideal, but it did work! And hey the site is still doing the job 5 years later. I've learned a great deal since then!