Black Monday (10 p.m., Showtime) - Don Cheadle stars in this hilarious new dark comedy that tracks the downfall of a fictional late-1980s Wall Street trader named Maurice Monroe (and, not coincidentally, the crash of the stock market on Oct. 19, 1987). In the premiere, Mo puts into motion his master plan to use naive new trader Blair (Andrew Rannells) to take over the Georgina Jeans Company. This thing is so over-the-top with all the shiny suits, giant mobile phones, robot butlers, clouds of cocaine and Lamborghini limos that you can’t look away. Highly, highly entertaining. Regina Hall, Paul Scheer, Casey Wilson, Ken Marino and Kadeem Hardison also star.
Also on tonight . . .
Valley of the Boom (9 p.m., National Geographic) - Want more nostalgia? It’s the third episode of this dramatic series looking back at the tech boom and bust of the late ‘90s. Tonight, the browser wars are in full swing, with Microsoft attacking Netscape and Michael Fenne using stolen technology to launch a streaming company called Pixelon. In a second episode starting at 10, Microsoft bundles Internet Explorer with every new Windows PC sold -- a huge blow to Netscape.
The Lake Eerie Murders (10 p.m., Investigation Discovery) - The latest installment in this limited true crime series looks at “The Butcher of Buffalo,” who strangled Joan Giambra to death and left her body under her comatose 11-year-old daughter.
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Some programming descriptions are provided by networks.