SEO and Ajax

Does anyone have experience using ajax on a website and then providing stardard html links for Google to crawl? I'm a little hesistant to have separate web pages for Google and others for users but the advantages of using ajax are hard to pass up. Also if the ajax application does not provide a unique url for a web page a visitor will not be able to provice an inbound link to the page if he or she chooses to do so. How do you address this situation?