Google Maps + Rails 3 = gmaps4rails

Just FYI I created a gem to easily integrate google maps within
Rails3:
- geocode
- display styled markers, polylines, polygons, destinations...

There is much configuration to fit your needs.

It was presented here: http://rubyshow.com/episodes/157

The source is here: https://github.com/apneadiving/Google-Maps-for-Rails

Wiki is here: https://github.com/apneadiving/Google-Maps-for-Rails/wiki

And screencasts are available here: http://www.youtube.com/user/TheApneadiving

May it be useful,

Cheers