Here is the link to the reaction. Apologies again for the sound level issue. I checked some of it and I think it's just about watchable. I have no idea why there's a slight echo with the show audio either BTW. Really odd.
HERE is the UK link to the episode. It's the same video on the US site.
Instructions - How this 'watch along' reaction works (ignore what I say in the last 3rd of that video).