[Please use plain-text, not HTML, for mail to the mailing list.]

Yes, there are several ways to do that. Here are a few. Other people will
perhaps add others.

1. You can open Dired on just the files that match a shell globbing pattern. For
example, `C-x d f*.html' opens Dired on only files that start with `f' and end
with `.html'. This is not using a regexp, but it is sufficient for your
particular request.

2. The rest of the items here work with the marked files in Dired. So first use
`%% m' to mark the files you want using a regexp. `%% m' acts on all files in the
Dired buffer, including files in inserted subdirectories.

3. Library `dired-aux.el' gives you command `dired-do-kill-lines', which is
bound to `k'. It hides (omits, "kills") the (lines for the) files that are
marked. Use `l' or `g' to show the (hidden) marked files again. Again, marked
files in included subdirs are omitted too.