Just a quick pointer to some ActiveSupport patches hoping for reviews:
Puts Array#to_query and Object#to_query in the right places in
ActiveSupport - http://dev.rubyonrails.org/ticket/10395
Preserve user-specified content type for XML and JSON rendering
(currently it's overridden and set to Mime::XML/Mimi::JSON -
Reviews appreciated! Thanks!
PS Rails 2.0 is almost here it seems: http://dev.rubyonrails.org/changeset/8321