Mark Cuban, on the Lex Fridman Podcast, discussed the current hype around artificial intelligence, comparing it to the dot-com era's 'frothiness' but argued against the existence of an AI bubble. He highlighted the lack of IPOs and companies with no intrinsic value going public as indicators that the market is not in a bubble. Cuban also mentioned his son's investment in Nvidia Corp. (NASDAQ:NVDA) as a potential risk to watch.