The people at 456 Berea Street dot com have written a scale of HTML knowledge, ranging from Level 0 (your grandmother…) to Level 6 (Dan Cederholm).
I was quite pleased that I fell easily into Level 5 (“These people tend to think about structure and semantics first and presentation later. Strict doctypes are generally used at this level to encourage the separation of semantic and presentational markup.”) even though I still argue that there are some cases where tables are suited to layout.
