The Klingon thing never bugged me all that much because I just assumed that the actor/actress own accent was changing it a little. My only problem (of this nature) is the use of "Let's get back to Enterprise" rather than "Let's get back to the Enterprise". I like the sound of "the Enterprise" much better. When I hear it not used, it's like hitting a pot hole in the road. You know something was supposed to be there but it's missing. Strange though, it bugs me the other way on Voyager. There was an early episode where Paris said something like, "It the Voyager" and it just sounded wrong to have the "the" in there.
Of course, Shatner was the king of saying things wrong. He did so on a few of the Animated shows too.
best wishes,
wayland