Yes, it' old and dated, yes its swarming with bugs and issues and yes it goes over board with in-game jokes and pop culture references and general tongue in cheek-ness
HOWEVER
It is still a classic game- sublime and immensely enjoyable. Great story, characters, dialogue and a massive amount of content. It expands hugely on the original and is well worth playing. I highly recommend patching this game up and installing Killaps 'restoration project 2.1' all of the relevant files are to be found at the No Mutants Allowed site- fix a lot of the bugs and various problems while also adding content that had been intended to be in the game originally.