Singularity

Not a nit, just an observation. This is, of course, one in a long line of similar episodes dating all the way back to TOS's "The Naked Time". The reason that Trek likes to do these episodes is that by relaxing the character's inhibitions they give us a peek into the desires that drive them. It's a fast way of telling us more about the characters. But in this episode the characters focus on whatever they were doing when they were affected. As a result, we really learn nothing new about them.
A more minor but more nit-like point; Trip mentions that the inertial microdampers in Archer's chair will keep him sitting safely even if the ship is shaking itself apart. Okay... so why have these never been used in chairs in Trek?

Zero deaths. T'Pol neck pinches Phlox, thus saving Mayweather from having a chunk of his brain removed.