O'Reilly has been in the news a fair amount recently for his firing from Fox News. Yesterday an article about him in the NY Post featured this photograph:
With his wide, thin mouth, his hooded eyes, his slight grin, his backward-sloping forehead, and the prominent jowls coming down from his chin, he reminds me of a crocodile:
O'Reilly's teeth don't quite emerge from his closed mouth, but the effect is not dissimilar.
Regarding the sexual harassment suits which eventually brought him down: the issue is way overdone these days, and it's ridiculous that cracking a dirty joke in the presence of a female or looking at her the wrong way is now considered "harassment." That said, my guess -- and it's only a guess -- is that O'Reilly was guilty of implicitly making a job contingent upon providing him with sexual favors.
Having his own personal harem must have been fun while it lasted.