Young Hulkenberg performance was very impressive. He turned the wet qualifying conditions into an advantage to put the midfield Williams on pole position, something the team hasn't achieved in a long time. In the race Hulkenberg demonstrated he has the skills to hold off the likes of Alonso and Hamilton. Considering Williams is thinking about replacing Hulkenberg for next season, he did a great job raising his profile in the best possible way.
It's interesting to compare the relative performance of the Redbull, Ferrari, and Mclaren by looking at the how long it took for each to pass Hulkenberg's Williams. Vettel passed in the first corner. Webber managed on the first lap. Alonso was stuck behind Hulkenberrg for several laps, but eventually made the pass. Hamilton had the hardest time getting past Hulkenberg and is an indication of just how bad Mclaren has been this season.
For Redbull to win a constructors' title after just six seasons in F1, against the established names of Ferrari and Maclaren, is a notable achievement. Redbull have had the best car by a huge margin all season, and if it were not a few mechanical glitches and driver errors, the team probably would have clinched the title a long time ago. However, they persevered through the bad moments and never lost sight of the prize. The only other result in recent memory that stands above Redbull's achievement is Brawn Racing, who won the contructors' title in their rookie season last year.
And then there were four. Drivers that is. Well, Hamilton only has a mathematical chance now, so realistically there are only three contenders for the drivers' title. I hope they get the chance to actually race each other for the title in Abu Dhabi. That would be the perfect ending to the best season ever.