Concetta Tomei's performance as Minister Odala is convincing and absolutely electrifying. This is the only TV episode of any show I think is worth watching just for one actor's performance. Even though you know everything for Voyager and Chuckles will be ok in the end, Minister Odala really makes you worry for them.
Beltran seems to play Chuckles very timidly in his Speech. I'm not sure if he's really doing that or if Tomei's Odala just makes it seem that way. Her glare alone is extremely intimidating, and that's with extensive facial prosthetics to boot. Her race could have been great ongoing antagonists for the show. Far better than that motorcycle gang they dealt with for two years.
Speaking of which, this episode also makes good use of the planet in that train wreck Basics. And while Voyager got a lot of flack for very limited continuity and consequences, this episode makes great use of prior episodes.
It's also told from a different point of view, which is nifty, a bit like TNG's First Contact episode.
Just don't watch the trailer before watching the episode. As almost always with Voyager, the trailers are terribly misleading.