Mind you...

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No. Mind you = Please notice carefully; please note.
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Mister Micawber, are you sure that that's the meaning?
I mean he emphasizes on you - mind you. Those are the lines of Oliver,
a friend of Clark Kent (Superman). And the woman he's talking about hit him with one hand
and made him literally flew across the room.

I don't understand why you would have been emphasized in this case; I can't think of any other meaning than what MrM has provided.

MadhulkMister Micawber, are you sure that that's the meaning?
I mean he emphasizes on you - mind you. Those are the lines of Oliver,
a friend of Clark Kent (Superman). And the woman he's talking about hit him with one hand
and made him literally flew across the room.

I haven't seen the episode in question but I will remind you Madhulk that, based o

Sorry for questioning that but it just seemed a little odd to me. That's all.

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... she, with one hand, please note, pushed me into the other room.
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in this case I would say it is telling you how strong she is to do it with one hand

..with one hand, mind you

with one hand (I'm surprised, you'll be surprised....she only used one hand..)