Thank you, I'm glad you enjoyed the game. Apparently, people are peculiarly drawn to filling the house with footballs. :D
The voiceovers were actually created using a wonderful tool called 15.ai, I'd recommend it to anyone looking to improve their game but lacking the time / energy / proficiency to create it live. The tutorial narrator was voiced by Portal > GLaDOS /Ellen McLain/ (obviously) and Bradly was voiced by Aqua Teen Hunger Force > Carl Brutananadilewski /Dave Willis/.