I enjoyed it for the most part (enough to tune in again), though I found a couple of parts not to my liking. In particular, I didn't like the profiling session, with Gideon addressing the audience- I thought that whole session was put together rather oddly. In general, I really disliked all of the profiling scenes with extreme closeups and background imagery- it would have been far more interesting to play those scenes out like the rest of the show, with the characters working through the problems.
The ending was pretty cheesy. It may have worked with the pilot, but they probably should have reshot it when the series got picked up, because I have a feeling they're not going to follow up on it next week.
Otherwise, I enjoyed it. The characters are, for the most part, interesting though a couple of them strayed too far into caricature at times (the skeptical FBI agent, the rookie agent), but hopefully that was just to set the stage for them and won't be an ongoing thing; they certainly showed enough promise outside of the stereotypes to not have to pigeonhole them that way. I like seeing Thomas Gibson in a dramatic role again- he was badly wasted for far too long on 'Dharma & Greg', and though he didn't have quite enough to do in this episode, he still managed to make a strong presence.