If you are using TL Space, this link will give you an assortment of extra impulse responses. This link was easy to find on the Digidesign site for a while, however over time it has been lost in the ether... A few colleagues of mine have been raving about this plugin, and I agree with them that as far as sound design is concerned this is one amazing plug in!
Here is the link to the extra impulses. Please read the descriptions as some of these did ship with the original instal. All up it is about 500 meg.
TL Space extra Impulses.