That is 'The Shrine', yes. That episode was making me bawl my eyes out, too because I have issues with brain damage (because of my mom who has of course a very different kind of brain damage but Rodney losing his intelligence still hit very close to home) and as far as I remember, people actually really loved this episode. At least my flist was all aflutter over the John/Rodney scenes and I remember a lot of squee that I just couldn't share because of the before mentioned issues.