Yea, It's Ahhhnold.
OP, are you actually complaining or just making an observation? If you're complaining, fire up Oblivion for a few hours, in which 5 actors did the
majority of voiceovers in this game, so that you're constantly hearing the same voices over and over. After a few hours of this, Skyrim's guards might not bother you so m uch.
If you're just making an observation, that's coo. I like the guard voices in this game. Reminds me of Ahhnold, and that makes me smile.