Assuming they could magically speak English;
Jesus - To find out if he was at all for real.
Napoleon - for better or worse the guy was a genius with few equals, yet little of the workings of the inner man are known.
Hitler - For worse or worse the guy was a genius who prior to the stupidity of the war managed to take a nation of starving hopeless people and turn them into the greatest military, social and economic power in the world. From starvation and 100% / day inflation to #1 in everything in 3 years flat is something that needs to be studied, but because of the catastrophe that followed it's all lost to history.
Teddy Roosevelt - Perhaps our greatest president and a great adventurer as well.
Robert Greene - Author & historian best known for his book "The 48 laws of power" - To help me put what the rest of the people were saying into perspective.
I'd put Greene to my right, Bonapart and Hitler accross from each other (that should be lively), and Jesus and Roosevelt next to each other.
I'd eat slowly.
Or......Any 5 playboy bunnies would do.