This deal has ended.
6th Avenue Electronics has the 40" Toshiba LCD HDTV (model 40RV525U) for only $637, still the lowest price we could find online. This features 1080p HD resolution, three HDMI inputs, internal tuners, and 8ms response time. Tiger Direct has it for $619.99, however they charge $28.86 for shipping. Ground shipping is free at 6th Avenue and there's no sales tax (except NJ, NY).