Previously featured facts

Did you know...

...that the voice for GLaDOS is Ellen McLain, the same voice for the Administrator from Team Fortress 2?
...that GLaDOS stands for Genetic Lifeform and Disk Operating System?
...that Ellen McLain (the voice of GLaDOS) is also an opera singer?
...that Valve employee Richard Lord was the original voice for Wheatley?
...that Portal 2 originally wasn't going to have portals?
...that there were plans for "sticky gel" in Portal 2?
...that both Portal and Portal 2 derived many of their ideas from prototypes made by Digipen students?
...that the cake in Portal is a Black Forest cake that project lead Kim Swift chose at a nearby bakery?