Only writers as brilliant as those behind “LOST” could give us an hour of television like this. No other episode has gone as far as “The Constant” in giving us a look at some fundamental theories behind the series, and yet at the same time pack an emotional wallop that reminds us that it’s the characters, not the mysteries, that are at the heart of the show. The truly mind-bending realizations Desmond has as his consciousness jumps between 1996 and 2004 will probably give us weeks of material to dissect and analyze. But, honestly, all I wanted to do was watch that final phone call between him and Penny over and over again. (more…)