His act is horrible, even with the pint sized tantei as close by models for his performance.

I think part of why I like Takagi so much is that he does notice the weirdness, but doesn't really act on it. You can see the gears turning though with a look here and there. That and Takagi is just such a lovable puppy of a guy. XD (Ever notice that Takagi looks like an adult Shinichi when he puts on his serious face?)