The fist two episodes were okay, and were very successful in making me want to know what happens next.
It doesn't make sense, though, that future Peter was able to put the past himself in a different body, and then future Peter not get affected.
And then this: It seems as if Heroes copied Mohinder's powers from a Spider-man comic book. Come on guys, be little more original.
Also: What happened to past Peter's old body? And remember when Sylar tried to cut off peter's skull and it healed back? Why then did it work on Claire?
Don't get me wrong, I liked the premiere. It just had (to me) a few inconsistencies.