Kathryn Hahn on the most awe-inspiring comedian she’s ever worked with

“The D Train,” out today, concerns a delusional small-town family man (Jack Black) who tries to wheedle the popular guy from his high school class (James Marsden) into attending their 20-year reunion. It's a shockingly grim movie dotted with comic moments, including one particularly tough confrontation between Black and his wife (Kathryn Hahn).

We spoke with Hahn, a veteran of comedies like “Anchorman,” “Step Brothers,” and “Our Idiot Brother,” about what it's like watching Jack Black's creepy character spiral in front of her. She also reflects on the most awe-inspiring comedian she's ever worked with. Can you guess?