As if there were any shortage of on-demand options, AT&T's giving U-verse TV subscribers more choice by offering multi-platform access to its growing catalog of films for a small monthly fee. The add-on service, dubbed Screen Pack, will allow users to instantly watch any of the 1,500 currently available titles from their home TV set, tablet or smartphone (via the U-verse app) or on Uverse.com for $5 per month. And for those who aren't quite sold on the idea of tacking additional