Clicktale.com actually let's you watch users on your site. You see what they see and where their mouse moves. This is different than what Omniture offers, it is

Clicktale.com actually let's you watch users on your site. You see what they see and where their mouse moves. This is different than what Omniture offers, it is more supplemental to what you are asking. I do know that Omniture's number one competitor is probably CoreMetrics.