Sure!Sure, but that's up to the actor. I'd just like Barry to look... interesting. Both engaging to watch and relateable. Not just Bradley Cooper in a lab coat. Unconventional can very well mean irreplaceable, as is the case with Downey Jr (how many eyebrows did he raise when he was cast?). Eisenberg is by no means my first choice, but now that you mention it, it would be an experiment more interesting than some of the names I'm seeing here. He or anyone who breaks the mold. Someone who makes a kid think "Hey, you don't need to have male model looks to be a hero".
I would like an unconvential actor. The already mentioned Mazzello, or perhaps David Gallagher (Super 8 etc)
Do you think the director should be unconventional too? What are your suggestions?