This isn't going to be long one at all (not that any of mine are, my attention span sucks) because critics like Sepinwall and Memles have already dissected every episode of Party Down very well.
If you haven't seen the show, it's all up on Netflix. Go watch it now, before I spoil you.
But I wanted to express how much I love this show. Party Down, for all of it's 20 episode run, has been incredibly honest and funny. It's a pitch-perfect combination of awkward social situational comedy and overarching themes of fame and fulfillment. It contains such earnest examination of our parameters for failure and success, our approach to relationships, and the fact that life really does just go on. The partially rotating cast of characters coupled with the setting really had me thinking about what counts as completion in life and about how people depend so very much on others. Add to that the comedic elements of amazing writing that manages to create some of the best situations in a sitcom in years and the weekly guest stars and the show had me busting a gut every episode.
And while this may be the end for Party Down, I don't think it's a failure. The run of the show itself is very reflective of the lesson of the show: while we may fail in many areas of life and while we may separate from those around us, life does go on and we can find happiness eventually. Just as Henry tried another audition and kept his relationship with Casey in a prime example of pursuing happiness and moving on, Adam Scott and much of the Party Down cast have landed huge roles on other television shows. Good luck to them.