Here are a few resources worth checking out if you’re running a stand-alone WordPress church site…
organizedthemes.com has a decent roundup of five WordPress plugins to help your church website. Not to be outdone Church Communications Pro has a list of six plugins along the same lines.
Revolution Design has released a free version of their church theme that is very “Web 2.0″ looking. If that’s the vibe you’d like your site to have it’s worth a look.
4-14.org has a sermon browser plugin that is very nice looking as well as functional. This one is still in beta so caveat emptor.