Dallas = Room + 2% DTPID Fee + 7.1% City Tax + 6.1% State Tax
NYC = Room + Sales Tax 8.875% + Occupancy Tax 5.875% + Room Tax $2.00 + Room Unit Tax $1.55
Boston = Room + State Tax 5.7% + City Tax 6% + CCF Tax 2.75%
Philadelphia = Room + Lodging Tax 8.5% + Sales Tax 8%
In Europe they are much more civilized about it -- they just toss in some huge VAT tax (like 20%) and may or may not mention that it is "included" (how thoughtful of them.) In some places there are still more taxes - in Dublin Ireland, my hotel bill had the room fee, with VAT included, but also added "other local taxes and fees" amounting to 9.25% of that...
In general, the observation that taxing visitors is popular is accurate, and accelerating, it seems.