An optimized version of iGoogle is now available for iPhone users. iGoogle, which can be customized to display RSS feeds, news on a variety of topics, crossword puzzles, weather maps, online tetris, etc. The iPhone optimized version lists all feeds and gadgets in one column (and if the TestiPhone.com site is to be believed, content is scaled to the screen) and you can select individual tabs at the bottom of the page (very similar to the traditional iGoogle set-up). The iGoogle iPhone address is http://www.google.com/ig/i and it is a significant improvment over the US-only Google Mobile page.
iGoogle on the iPhone (simulated)