Interesting
RSpec 2.5, Capybara, and Selenium
Capybara, Selenium, and RSpec's request specs play nicely together, and you can even run tests that require javascript, using the :js => true option.
However, doing do requires the very latest Capybara, so be sure to specify the :git option in your Gemfile.
Ryan Bates has done an excellent RailsCasts episode on just this.