I HATE, HATE, HATE what they did to Starship Troopers!!!!
You Starship Troopers fans need to read
Armor, by John Steakley. To hear John Steakley say it -- he wouldn't have needed to write Armor if Heinlein could write action sequences.
It was a favorite to win the Nebula Award for best science fiction book the year it came out, but it was disqualified on a technicality by the head of the Nebula Committee. On a side note: the book that won that year was Ender's Game, soon to be in a theater near you. Probably not so coincidentally, the head of the Nebula Committee, who disqualified Armor, was Orson Scott Card, the Author of Ender's Game, the book that won. Nice, eh?
Anyway, if you're a Starship Troopers fan, read Armor. It's superior.