"Terra Nova" may prove to be the breakout hit that its "Avatar" meets "Jurassic Park" with a dash of "Lost" lineage so wants to deliver. But it's hard not to wonder whether its HD-ready looks are coming at the expense of life-size characters, which is the real reason people kept coming back to "Lost." TV, with its long-form, serialized structure, can do so much that film can't. Cant we leave popcorn movies in theaters where they belong? FOX'