I seem to be in the minority here, but I love Javik. I'm about to finish my first playthrough on insanity and I have used him the entire game.
He has a good amount of hit points and seems to die a lot less than other squad mates.
He uses an assault rifle (assault rifle/biotics is rare in this game for AI squadmates), so he deals a fair mount of damage on his own without direction.
He has pull which is the equivalent to a lobbed pitch for anything not shielded/armored.
Dark Channel does a great job of softening and damaging big high threat units.
A combination of those 4 make him probably my favorite person to bring along with me.
Edit: Lift grenades are also great. They deal a good amount of damage and pull just because they can. I use them all the time.
Last edited by LosT3PropheT; 03-13-2012 at 05:26 PM.