I do like Jason Clarke, but I'm not sure if he can surpass Christian bale as John Connor. I'm part of the few that actually loves Terminator Salvation and Bale's performance in that film. I do like Emilia Clarke in the casting of Sarah Connor though, I think she'll do a fine job. On the other hand, I just can't get behind Jai Courney as Kyle Reese. I absolutely cannot stand him.
Could Dr Who be a liquid terminator?
as for Matt Smith