Aikido, what do you want to know about it?

I'm going to be doing a podcast with a friend of mine who is a Sandan in Aikido, Blue in BJJ & Yellow in Judo. Judo and Aikido are cousin arts and were crafted around the same time with similar goals in mind; but yet they splintered off in different directions...

What questions would you all like me to ask him? The gentleman is a great guy and willing to discuss anything regarding the art. No question is too crude.