bbPress.org

Couple of things:

sub forums currently don’t list on the main forum page – intentional?

currently the default order position for forums is 0, unless you are going to add in a better method for organising these, could I suggest a default order value slightly higher – or is this better served by a plugin.

style.css

would it be better to have an additional forum.css imported into this to keep the style for the forum separate, and making it slightly easier for people to copy the whole thing (minus style.css) to an existing theme?

Normally I’d also suggest importing the standard style.css from twentyten, but that may be difficult.