Aluminum / aluminium and pronouncing herbal as "errbal". Also "cracking" windows.
In the kitchen, the American standard favors the French: herb (herb vs urb) and filet (fill-it vs fill-eh)
In a car, it is reversed: chassis (shassy vs chassy) and coupe (coop-eh vs coop)
Others that differ include (all where Brits favour a francophone pronounciation) papier maché, en route, double entendre