I was rather surprised. Gibbs was much taller and thinner than I had pictured him, and much more of an officer-class type, whereas McGee was much plumper and dimmer. I hadn’t expected Caitlin to be so beautiful and never in a thousand years would I have guessed that Ducky was played by David McCallum.
Most of all, however, I was surprised by how bad the show is at the science aspect and the firearms. It was Season 1, and therefore pre-dated Mythbusters, and that can be their only excuse. I won’t be watching it regularly – not even for Abby.