Crow is correct - James Earl Jones is a Capricorn, as his birthday is 17 January (Capricorns are born between 22 December and 19 January). Tom is off by quite a bit - Leos are born between 23 July and 22 August.
During their game of rock-paper-scissors, the bots recite lyrics from "We Didn't Start the Fire" by Billy Joel, and "Vogue" by Madonna.