What rails plugins are good, stable and *really* enhance your code?

Question

Anyone have a list of rails plugins that are both stable and give you enough functionality to be worth the extra effort of supporting?

Edit:

I am mos

Answer 1

For me, Haml is excellent. It's not for everyone but if it clicks with you you'll love it. Set aside 30 min and give it a shot. It reduces the clutter in my views by about 50%.

It's easy to install using Rails 2.1+'s gem dependencies :

# environment.rb
config.gem 'haml'

Then:

rake gems:install