1. Janitor Sylvester P. Smythe was the dopey mascot of what 'Mad' magazine copycat founded in 1958?

2. The theme song of what FX series reminds its title character, a stand-up comedian, “You’re gonna die”?

3. Because of his dancing skills, what was the nickname of famed Philadelphia gangster Jack Diamond?

4. Baltimore entrepreneur Duff Goldman is known as “the Ace of” what food?

5. What was the capital of Burma until its spelling was officially changed to “Yangon” in 1989?

What’s the "Kennection" between all five answers?