Thanks Yebyosh!
I don't get Hohenheim, so he knows Ed's a well known alchemist. How can he just let his kids run around like that? & he just talks to Ed like everything's ok. This guy is sooooo weird. Calling Ed the "smallest alchemist" & the way he doesn't listen to Ed was funny though.
I don't think Hohenheim is that person, but I think they're related somehow. & I think his warning to Pinako is about the opening of the Gate.