Let me say that I was never a big big fan of the original, though I acknowledge that it was well done. (I preferred the standalone, "weird pockets of the universe" stories to the long epic of the conspiracy stories.) The one thing I thought it lacked in those days -- though I may have missed some examples, as I didn't watch it every week -- was a sense of humor. (I do remember one fun story about the filming of an X Files movie based on Mulder and Scully's cases.) It seems that Chris Carter, or whoever is helming the new series, is allowing a little more humor and snappy dialogue, at least from Mulder.
The other thing that used to annoy me is that, after all their adventures, saving each other's lives, and having a child together, they were still calling each other "Mulder" and "Scully." Uh-uh. Can't see it. But in this most recent episode about the Trash Man, Dana actually calls him "Fox," and I think in this one or in last week's, he addresses her as "Dana." About time!