Not sure if I saw anyone mention this, but I stumbled across it and it's pretty neat. If it's a repost, I'll delete or a mod can.

1. Log in
2. Above your RR number at right, click "My Account"
3. Depending what invoice/flight info you are looking for, click "Upcoming Trips" or "Past Trips"
4. Click the Confirmation number in a gray-blue strip to the right

You get a page with pretty much the info from your confirmation email. Mine only goes back to a trip I took 2/28/11 (not the outbound 4 days earlier), but it's a start.

For my upcoming RT flights next month, it displays my info (Award flight) and that of my son, traveling on my CP.

Nice!