Spade in hand, I stand before thee crypt keeper and command this post risen from the dead and back into the land of the living-dead.
OK, so I searched and this is the only result that came close and it's pretty outdated.
According to the codex in regards to themes:
# style.css - The main stylesheet. This must be included with your theme.
# index.php - The main template. If your theme provides its own templates, index.php must be present.
# comments.php - The comments template. If not present, comments.php from the "default" theme is used.
# comments-popup.php - The popup comments template. If not present, comments-popup.php from the "default" theme is used.
# home.php - The home page template.
# single.php - The single post template. Used when a single post is queried. For this and all other query templates, index.php is used if the query template is not present.
# page.php - The page template. Used when an individual Page is queried.
# category.php - The category template. Used when a category is queried.
# author.php - The author template. Used when an author is queried.
# date.php - The date/time template. Used when a date or time is queried. Year, month, day, hour, minute, second.
# archive.php - The archive template. Used when a category, author, or date is queried. Note that this template will be overridden by category.php, author.php, and date.php for their respective query types.
# search.php - The search template. Used when a search is performed.
# 404.php - The 404 Not Found template. Used when WordPress cannot find a post or page that matches the query.
OK, now, let's assume for a moment, that I have turned on the option that only registered users may post comments. When they click the "Register" (or even the "Login") links, they get the beautiful (used loosely) WP Login screen. Gah! I'd like it to look a little more integrated into my site than that. Is there a way to do that through themes/templates, or am I going to need to *cough* hack & slash and make my own login/register page?