It’s August, which means it’s hot, and if you’re not spending your time in an actual swimming pool, you may want to beat the heat with movies about swimming pools. Luckily, there are some great ones to suggest. First up, “La Piscine” (1969) also known as “The Swimming Pool,” and the ne plus ultra of pool movies. It all revolves around the cool, blue pool in this steamy, intimate drama directed by Jacques Deray. French superstars Romy Schneider and Alain Delon play a couple whose sexy vacation in the south of France is crashed by her ex (Maurice Ronet) and his daughter (Jane Birkin), and the te…