Hey all,
Is there a way to insert a line break in my site name in the header, and style the two lines differently?
eg I would like the name of the blog to appear like

my blog about
AUTOMOBILES

You could use the site title for the first line and the tagline for the second line and style them differently or you could add a widget area and use a text widget for the title.

Hmmm text widget eh? I suppose then I could still wrap the whole title in H1 tags?

Yup
<h1 style="text-align:center;">my blog about<br />AUTOMOBILES</h1>