Hoorah for the internet! Instead of having to buy the expensive hard copy, Google Video now allows you to download the Charlie Rose program from May 4th, 2000 for USD $0.99. This show features interviews with Jennifer Ehle and Stephen Dillane about The Real Thing and a clip from the play. Have a look at the transcript at the fansite.
It's not an entirely smooth process. Firstly you need to set up a Google account. Then go to the video and click "buy" once you've logged in. To pay you need a credit card and American address (but only the state and post code need to match up eg. NC 28779). You may or may not have to download the Google Video Player which is only available for Windows 2000 or XP. You can download the file in three formats - Windows .avi, iPod Video or PSP. I've found that using VLC allows me to watch it on Mac OSX. If you're having trouble go to the help center.
Once you've paid, you should be able to download the file any number of times, so it's not a problem if you want to watch it on different computers or your connection cuts out. The file is a whopping 219mb so be prepared for a long haul even on broadband. The Real Thing segment starts at 30 minutes in and lasts about 11 minutes.
Pst, you can get a taste of the show at EhleNews.