I like Cuban's negotiation technique as well. He waits for the other sharks to ask the basic questions (past sales numbers, past growth, scalability). While the other sharks are hesitating and scratching their heads, Cuban makes up his mind quickly. If it's a worthwhile investment, he goes in for the kill with a few quick questions and an offer. He pressures to close quickly. And if the pitch man hesitates and shows cloudy thinking or confusion, Cuban rescinds the offer. It's always fun to watch.