This is peak television. One of the most satisfying episodes of all time.
The funniest and the most wholesome episode of the whole series (at least in the first 2 seasons). If they had decided to end the show here, it would have been a perfect ending (the actual ending is pretty much perfect too).
It takes everything that makes P&F so great and amps it up a notch. Science defying contraptions, amazing songs that make you wanna dance (City of Love and Summer Belongs To You are 2 of the best songs of the show), the sweet relationships among the characters, hilarious jokes etc.
Yes, this is just perfection.