Hmm... there is something to be said for the imagination factor with a flaccid penis as well. You get to see the goods without knowing exactly how big, thick and hard it's going to get after you arouse it. Anticipation is sexy.
Now that you mention it, I just downloaded a video clip this week of a guy that goes from flaccid to erect in a matter of seconds, while playing the guitar! Really amazing.But what fascinates me the most is the acceleration...
Who can go from 0 to 90 (degrees) in 4 seconds flat?