 He also joined Will Ferrell in the iconic sketch, More Cowbell. We were just in the moment performing in a sketch and found out way later that it became so popular. Come on, Jim! Guess what? I got a fever, and the only prescription is More Cowbell. Chris Kattan plays Mugubi's joke house in Timonium, Maryland, this Friday and Saturday. Jason Fraley, WTOP News. And you can hear their full convo on WTOP's Beyond the Fame podcast.