In WordPress blogs there are often these nice looking blocks
with big fat hanging quote marks and some sentence pulled from the
main body in a larger font.

I think we have all seen them.

Is there a WP plugin that will let me create these block quotes easily
for each page where I want to see one?

Hi,

Check with these plugins:

http://wordpress.org/extend/plugins/wp-quote-tweets/
http://wordpress.org/extend/plugins/quotes-collection/

Thats great. thanks.

I have a plugin created for a client that allows you to choose categories to rotate. It works through the posts from newest to oldest every 24 hours. When you reach the oldest post it changes the time stamp on the newest post, making it the oldest post allowing you to rotate content every 24 hours a day indefinitely. If interested I'd be happy to send you a copy just PM me.

Just keep in mind that I am not publicly supporting the plugin so you might have to spend some time tweaking it for your situation.