I used to love The Medusa Touch with Richard Burton, very Omen-esque as I remember but maybe it wasn't - I was very young.
It was roughly in the same sort of vein as the Omen - a slick ESP chiller handsomely produced, but nothing like as good.
And it wasn't a made for television film. It had a full release in the late seventies.
Note the poster: Burton after a night on the ale.