I bumped into Yann from Credit Mutuel while at LIFT.  He pointed out their banking portal work that is underway.  Check it out.

Link to Accueil (Link removed – beta site, and will change)

Note these things;

• drag and drop sections
• open and close stories
• Click personalise and note the page dims, and the customise bar opens

And all of this is super fast.  It is all downloaded and run locally.  This is the first bank Ajax implementation I have seen.