I'm not a fanboy for Yahoo but I saw this article on Download Squad. It's about the new Yahoo Go 2.0 (Beta) application and I was pleasantly surprised. It has a nice GPS application with POI's, Maps, Directions etc. It also has Weather, Search, Flickr, RSS, News, E-Mail integration etc. Here's the link to the article nice detailed review. It works very well on the Telus network and runs pretty fast. On the road and at home with Yahoo Go 2.0 - Download Squad
I will add more input the more I get to play with the application.