Nope! You'd be surprised who it might affect. Families with a few kids (lots of tax credits rather than deductions) that own their own home and have a decent salary could potentially owe the AMT.

If you make more than the exemption amount for your category (between 40-85K or so depending on your situation and tax year), then you should be calculating the AMT to determine whether or not you owe. It affects more people than you might think, even if it just requires the calculation to occur to see if you owe it or not.