Google Maps for Nokia N series! A little story before I introduce this software:

Yesterday, after a lot of insistence from my mother, I had to head down to my mother’s cousin’s place; whom I hadn’t seen for seven year due to their hiatus abroad, which ended recently. Anyway to keep things interesting, the place was extremely arcane and I had no idea where to head from home. TECHNOLOGY to the RESCUE. I quickly found the first GPS maps software I could find on Google for my trusty N95 :: simply named Google Maps. Feeding in my end location, it seamlessly guided me through every turn. Yes! reaching this arcane destination was as easy as having a TomTom in your car.

Go ahead and try it yourself:

http://www.youpark.com/symbian/google-maps-nokia-symbian-s60-3rd-edition-/mobile-software/30914/

Oh! and there is a wonderful repository of mobile software on the above site. Please do comment back, if you find other software gems on this site.