Political satire takes center stage at 10 p.m. on NBC. “Saturday Night Live’s Presidential Bash 2004: The Great Debates” will showcase some of the best political skits from the past 30 years. Highlights include the Bush (Will Ferrell) – Gore (Darrell Hammond) debate of 2000, the 1992 Clinton (Phil Hartman) – Bush (Dana Carvey) – Perot(Dana Carvey) debates and goes way back in time for the 1988 Bush (Dana Carvey again) – Dukakis (Jon Lovitz)…