If you, like the thread title suggests, have a oneworld Emerald card this will also get you access to the AA Flagship Lounge at LAX, which is a lot nicer than their mediocre Admiral's Clubs.

On the return flight LAX-TXL you will be departing from TBIT at LAX. The oneworld First Class Lounge is located in this terminal and your Emerald card will get you and your partner in. I did quite like it there.