google's mobile proxy
If you've mucked around with the mobile version of Gmail, you've probably stumbled across Google's mobile proxy. It does some nice work creating a mobile-appropriate browsing experience (on the fly) for any URLs that you click on from messages in Gmail. If you haven't found it yet, send this link to your phone, and keep it handy: http://www.google.com/gwt/n.
(And yeah, old news. But hey -- if you haven't seen it, it's new to you!)