Shrek 2 Easter Egg - Alien and Beauty and the Beast References

The "Alien" reference is when Shrek and Donkey first meet Puss in Boots, he climbs into Shrek's clothes. He then rips through Shrek's shirt making it look like he was going through Shrek's chest, which is a reference to when aliens burst through the human's chest. The "Beauty and the Beast" reference is in the potion factory scene when Shrek spills the giant bucket of potion, it spills on two workers and they turn into a clock and a candle. This is a reference to the clock and candle characters from "Beauty and the Beast."