I'm actually bothered by the obvious ripoff of GLaDOS. I guess I just really like that character and the intelligent creativity that went behind it. This is like going Weird Al on Valve without realizing it.
I don't think it's styled after GLaDOS, there's a few genres of music that include a high pitched voice like that. I would suggest that this song is actually just a happy hardcore song with new lyrics, listen to the band Scooter (http://en.wikipedia.org/wiki/Scooter_(band)) and you'll see the similarities in the majority of their songs. The songs normally feature an announcement (with the "distant" sound) and then a high pitched voice.
I'm Lonely - Scooter http://www.youtube.com/watch?v=xYTTSIvePSY