If you have a cat, stay away from the monitor. It'll eat your cat. An iguana can roam your house freely if you let it. Can even get a leash for it. Pretty cool temperament too. I've heard of some being aggressive around age three though. They can also have some cool colors.
I don't personaly know, but I hear iguanas are a pain in the butt to care for.
1.1 Fire Ballz 1 Pastel
1 Mojave .1 Normal
.1 Pinstripe 2 Corns
.1 Jungle Corn .1 Pueblan Milk
.1 Rosy Boa 1 False Water Cobra
2 Painted Turtles 1 Stink Pot
1 Miniature Pinscher http://www.youtube.com/1980norcal