Jack Black is hosting “Saturday Night Live” for the first time in nearly 20 years on April 5 — and it’s keeping him up at night. The actor, comedian and musician made a stop in London on Sunday for the premiere of “A Minecraft Movie” before heading into the “SNL” writer’s room this week,

Jack Black being nervous for his Saturday Night Live return is an understatement. Speaking to Variety for the London premiere of his upcoming action comedy, A Minecraft Movie, the 55-year-old actor admitted his April 5 appearance will feel “cray cray” following his 20-year hiatus from Studio 8H.

Black admitted in a recent interview that he's "having lots of nightmares" ahead of hosting 'SNL' on April 5th, his first time hosting the show in almost 20 years.