relative clauses

My neighbour, ... used to be a singer, is learning to play the trumpet.

I'm talking to the man ... sister works with me.

Commas? The man ... who had lunch with you ... is George Clooney.

Who is the boy ... is standing next to Richard?

Do we need the relative pronoun? She's the woman ... I met yesterday.

Do we need the relative pronoun? Did you get the job ... you applied for?

Commas? My father... who lives in Berlin ... is a great fan of Borussia Dortmund.

My house, ... is very old, has a wonderful kitchen.

Which is the house ... they live?

Do we need the relative pronoun? This is the song ... is so popular right now.