Pronoun immediately following its antecedent?

Question

Is placing a pronoun immediately after its antecedent in a sentence valid grammar?Is there a term for this construction?Some examples are:* President Obama, he gave a speech last night.* The speech, it was about the financial system.I hear this on the Planet Money podcast at least once per episode.

Answer 1

"President Obama, he gave a speech last night.* The speech, it was about the financial system.I hear this on the Planet Money podcast at least once per episode."

You can re-write this as :

He, president Obama, gave a speech last night. The speech was about the financial system. It is heard through the Planet Money podcast at least once per episode.

OR

He, president Obama, gave a speech last night.  It, the speech, was about the financial system. It is heard through the Planet Money podcast at least once per episode.

OR

He, president Obama, gave a speech last night about the financial system through the Planet Money podcast, at least once per episode.