Conan O'Brien and George Lopez both host late-night talk shows on TBS. Their studios are both on the Warner Bros. backlot in Burbank.
Lopez even joked that the two of them carpool to work together.
Tonight, the fact that it's a rather short walk (and an even shorter golf-cart ride) between their two studios will make things very convenient. Lopez will be a guest on Conan O'Brien (9 and 11 p.m., TBS), and O'Brien will be a guest on Lopez Tonight (10 and midnight, TBS).