Red Dwarf Series 3 Easter Egg - Polymorph Special!

Go to 'play all' on the main menu. Do not fast forward or skip. When the episode Polymorph comes on, watch it to the second last scene. As the words 'CONTENTS 2' just appear, you may notice a very small grey blob appear near the top right of the screen. At this point press select. You will only have about half of a second!
The number '8' will appear in red for two or three seconds. On the final scene with the second Lister, just press select as the 2nd Lister grins. The screen will pause. Press the number 8.
Congratulations! You have just found a secret (and very funny!) Chris Barrie interview! It goes on for six or seven minutes, and Polymorph makes an appearance! But please be aware that if you miss the oppertunity to press select on either prompt, you will have to 'play all' again.
PLEASE NOTE THAT THIS DOES NOT WORK IF YOU SELECT THE EPISODE FROM THE MENU, NOR IF YOU MAKE ANY ATTEMPT TO FAST FORWARD, REWIND, OR SKIP! Good luck!