The closest phone that Verizon has to the iPhone is the XV6900 (HTC Touch) and it doesn't have all of the bells and whistles of the Apple product. However it does come with Windows Mobile 6 Professional which might be a plus to some people.
Otherwise there is the new Sprint Instinct (Samsung) model that looks like the iPhone that was just released.
http://www.nowisgood.com/?id12=ISEARCH_040108_Instinct