In TOW where Dr. Ramoray dies, Monica says she straightened Joey's showr curtains, so he won`t get mildew.
BUT when we see Joey's new app for the first time, his shower cabin is made of frosted glass.
BTW, those three episodes (Eddie moves in, Eddie won't go and Ramoray dies) are definetely my favorites - so I just noticed :-)
Tons of one-liners to remember...
cheers, marc