“Friendly rivals” WAMU 88.5′s Kojo Nnamdi and WTOP’s Mark Plotkin will appear as in-studio guests on each other’s radio shows tomorrow. Lets hope there isn’t any traffic downtown- Kojo will head to WTOP for Plotkin’s 10 am show, and Plotkin will return the favor on “The Politics Hour” at noon.

In the past Plotkin has told his viewers of Nnamdi, “If you want that NPR babbling-brook auditory stuff, please go hear him at noon.” Nnamdi’s no angel either- “His only claim to legitimacy is by association with me,” he has said of Plotkin, his former partner.

And just today Nnamdi described the pair as the “Butch Cassidy and the Sundance Kid of the airwaves…” so this will be interesting, to say the least.