When we heard that the latest episode would feature the Oscar-winning actor, we were pretty excited, for it surely promised two things: one, that Penn – famously a laugh-free zone since 1983 – was willing to send himself up a little, and that Zach’s abrasive interviewing style would generate fireworks, no matter how fake. However, keen not to repeat himself, Galifianakis instead shows up as his camp twin brother, Seth Galifianakis, a moustachioed blabbermouth who doesn’t let a pensive Penn get a word in edgeways. The material’s still quality, but Penn barely speaks, and the anticipated dust-up never materialises. Shame.

Best bit: When Seth starts to discuss Penn’s humanitarian work in Haiti. “Is there a Six Flags there?” “No.”