Summary
Ahoy!
The Good
Well, building upon the first game is a good place to start. Take one of the best games ever made (that includes all genres, on all platforms, past, present, and future), and make it longer and somewhat tougher. Oh, and two difficulty levels. Can you say replay value? Oh yea, the utter hilarity at every turn is nice, too.
The Bad
Nothing at all serious, but it was just...odd. The ending, in particular, is too strange for words.
The Bottom Line
Yet another classic, but play the first one first (duh).