B&H Photo has the 21″ 2.7GHz iMac on sale for
$1149.95 including free shipping plus NY sales tax only. Their price is about $150 off MSRP. Add an iMac to your shopping cart, and B&H will offer an optional 3-year AppleCare Protection Plan for $122 (regularly $169).
Update: B&H has moved their price to $1196.99.