Some time ago I would have said Erik is the best actor. He plays in an unaffectedly way, what even some adult actors can't. I have seen him in movies like Unfaithful and Wendigo (what a crappy movie btw.), and he was always outstanding. But I don't really know if he has developed his acting skills now, I have to wait till Season 7 is finished to picture that. So I can't say whether he still is the best actor or not.
That leads me to the other actors.
Bryan Cranston - does an excellent job playing clownish Hal. I have seen him - by chance - in another role some time ago. He played in a serious movie, I don't know which it was, but he had to play a serious man. He did a good job, but I couldn't take his facial expression serious. Maybe because I know him as Hal so well.
Jane [size=-1]Kaczmarek - I don't know her in other roles than in MitM, but in her role as Lois, we can see her talent very well. She plays the mean, but also the lovely Lois when she has to. She is a pretty good actress too.
Christopher K Masterson: He is a cool guy, very natural way of acting, but it's somehow always the same rhythm with him. Don't know how to explain it better.
Frankie Muniz: I'm pretty disappointed in his acting lately, but I alredy told you that in another thread. He seems to have lost interest in playing Malcolm.
Justin Berfield: Somehow he is a wunderkind, since he was the first kid who played in over 100 episodes of two shows under the age of blabla something like that.
He does an outstanding job playing Reese. Sadly, I haven't seen him outside of MitM, except in some episodes of the show that is called "Auf schlimmer und ewig" in German, don't know what it is in English.
They are all very good in their way. Can't decide...
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