Nice installment, and nicely gratuitous Buffy reference*. I assume that Clark caught an episode in our dimension, since that gag was first used in 2000-ish.
Glad to see that there's a possibility that the dimension swap thing is a man-made event that can possibly be stopped, not some vast impersonal natural force.
One thought - given that there appear to be many parallel worlds, won't Clark have to do this again and again whenever someone builds the equipment in another universe?
* The "World without shrimp" is a running gag in the series and in Angel, whenever they talk about travelling to other dimensions. One of the Angel characters also claimed to have visited a world where there was "nothing but shrimp;" it wasn't very interesting.
