The 2 ENT MU episodes were definitely OTT but that's what makes them so much fun. I also really liked the way they didn't try to come up with some convoluted way of showing the MU.
On a side note I think "Crossover" is extremely underrated. Most people tend to lump it in with the other DS9 MU episodes(which are varied in quality) but I think its just as good as "Mirror, Mirror".
"Well, I come from a long, long line of smartasses. Smartass is allergic to dumbass. Itís actually a physical allergy, as in youíre repulsed by dumbasses."