The cast of Frasier had a cameo...
Didn't Kelsey Grammer and other cast members of Frasier have a cameo in this special? I think Captain Janeway had a role in this, as well.
shareIt seemed to be four regular characters of Frasier (Roz, Daphne, Niles, Dad) plus the dog, and Captain Janeway, without Frasier, but maybe he was the Klingon.
Still, although I love Voyager and Frasier, they really don't go together well, even as a spoof. It was one of the weakest points of the show.
Since this subject has triggered my need to rant:
The other weakest point of the show was the Kenny G tribute to work you didn't get to see, because Kenny G is apparently so important that the camera has to be on him (even though he doesn't actually do anything) instead of what the tribute is for. This appears to be Kenny G's only connection to Star Trek, so I have no idea what it was doing there.