Huge, insanely huge mall that would take several days to walk through and see all it has to offer. Ive never been there, but have heard its really cool and has a roller coaster.
http://www.youtube.com/watch?v=DSV4cwUWI8M

This is a cool mall located right in LA. If you have never been there, its worth it.
http://www.beverlycenter.com/

Perhaps the best mall in New Jersey this is certainly the largest New Jersey has to offer. Amazing shopping, you really could spend the entire day hanging out and eating, shopping and playing with the kids. Many stars and athletes have homes in NJ that surround this mall so you can always see some celebrities lurking about.
http://westfield.com/gardenstateplaza/

If you like the Mall of America, you would surely enjoy this, even larger mall, in Alberta, Canada. One could easily vacation here...the amenities are available.
http://www.westedmall.com/home/default.asp

This is actually 2 malls in Pennsylvania that are incredible in size and a really cool place to shop and hang out.
http://www.kingofprussiamall.com/

This place used to have an awful aroma emanating from the basement area the permeated the entire mall which has since been remedied. Overall this place feels humongous because of how wide it is and how many levels there are. Cool place and if your going to this area also check out Stew Leonards.
http://www.palisadescenter.com/

One of the coolest malls in the US, this place is located in California and is highly recommended.
http://www.southcoastplaza.com/