Are the Stargate aliens showing too many Tau'ri behaviorism and speech patterns?
Not only do they all seem to be using the Imperial, and to a much lesser extent also the metric, System, they also use a lot of Earth (specifically American) expressions.
In "Miller's Crossing", Ronon exclaims "Sweet!" in response to John telling him he's found something for him to point his gun at.
Am I the only one who was irked at this? The suspension of disbelief is almost all gone by now. Ronon and Teyla (to a lesser extent) have become so earthified they feel and sound just like pretty much any other Earthling.