Doing a good ad parody is difficult, at best. You've got to play it totally "straight" while being just over-the-top enough to avoid being the very thing you are mocking.
And that's why I have great respect for the Party Like a Pro infomercial viral campaign:
It's funny, it shows an amazing attention to detail, and it the real product pitch at the end doesn't make you feel cheated. Advertainment at its best, brought to you by Malibu Rum.