Google has made their main page and many of their other pages iPhone compatible. The main page gives web, image, local, and news searches, there are easy buttons for GMail, Calendar, Reader, and More -- More being Docs, GOOG-411, SMS, News, Photos, Blogger, and Notebook.
In other news, iPhone is the fastest-growing search term of 2007, which isn't too surprising. If you're a user of AOL's Instant Messenger and Google's GMail, Google has integrated AIM into GMail. W00t!