Starship Troopers 3: Flawed and more mocking than 1, but likeable similar to how John Ashcroft liked "The Simpsons" because the family always had supper together. Plus the cute blonde with the legs is redeeming. (2 does not count--even the fanfic cult-following doesn't consider it canon.)
And yes, I remember that the singer-Sky Marshall turns out [SPOILER OMITTED].