The acting is quite bad, the cast are just not clicking very well at all. Compared to the likes of 24 or heroes there seems a lack of quality in acting.
BAHAHAHAHAHAHA, Heroes + good acting, seriously, i mean, seriously?
The stories/characters are just so predictably boring, asian guy, I'm gonna die, so I'm gonna believe any half sentence anyone says to me and do my best to ignore what my partner says, even though so far everything he saw they've checked into has been verified as real.
The lead's "secretary" type, with all the crow stuff, not thinking saving billions of people is worthy of letting an almost dead Nazi out of jail, then refusing to simply do her job without a diatribe of are we really looking into this, repeatedly, for no reason.
The lead's wife acting like a complete spaz with everything, the inability for them to just ask the kid what she saw and help her get over it.
The CIA refusing to help them find the cause? what, why would the CIA be against it, likewise why does everyone know a random hacker who can break into the secret files they need, likewise, with this the most important thing to him why did it take him so long to agree? Not to mention, they've just released a Nazi, they could go over and take a look at where these crows died, but meh, its not really important all of a sudden, the fact its the only lead in the flashfowards, which killed millions maybe across the globe, meh all of a sudden its who the hell cares?
Shows that just massively change the story for the episode, for no real reason other than to add filler to a series, but which absolutely makes no sense to the main story line or characters or how they've acted in the past few episodes, is nonsense.