You just missed this one, actually. Galacticruise brought together a bunch of your favorite "Battlestar Galactica" stars, provided you prefer the original, feathered-hair series. Or, alternatively, soap operas: One of the guests was never on "Battlestar Galactica," but was on "As the World Turns" for 10 years. I'm as lost as you are. Galacticruise did, however, have on board Richard Hatch, an actor on both the original and the good series, as well as the soap opera "All My Children," so he should have made everyone happy. At any rate, before I'd go on this cruise, I'd want a guarantee that every single piece of paper on the ship was octagonal.
There are a lot of computer-themed cruises out there, but I'd probably pick MacMania, mostly because it offers a class in Extreme Googling. You can even become an Apple Certified Support Professional over the course of the 10-day cruise. That sounds like a lot of fun, but at the same time, I now feel like I should ask the guys at the Genius Bar how much of their training time was spent with a mai tai in hand before I hand over my laptop.