Perhaps unavoidably, ABC's "The Path to 9/11" plays like a compendium of movies and documentaries surrounding that fateful day -- a pinch of "United 93" here, a dollop of "World Trade Center" there. Derived in part from the 9/11 Commission report, this five-hour presentation is earnest but scattered and a little plodding, with the most powerful aspect involving John O'Neill, the terrorism expert slain in the attack, strongly played by Harvey Keitel. Although NBC cleared ABC's path by scrubbing its own planned 9/11 miniseries, it's still a trail littered with the host of productions that preceded it.Indeed, the sheer glut...