We had an iguana for a little while, and I've known people who kept them for quite a while, and from my experience, I don't know that they ever enjoy being handled or petted, but like Judy said, Rusty would know far better than us.

One thing I do know is that they must have UVB lighting, which an ordinary basking bulb doesn't provide. Without UVB lighting, they will develop metabolic bone disease which will kill them if not treated promptly.

Here's a webpage I found that seems to have a good deal of information about iguana care: http://www.iguanaanswers.co.uk/