We all know that Jon Hamm is a total scene stealer.
But the Mad Men star became an entirely different person when he assumed the role of Bill Hader!
[ Related: Amy Schumer Apologized For Making THIS Race Joke Two Years Ago! ]
Joining Amy Schumer in an interview for her upcoming comedy Trainwreck, the 44-year-old stood in as the Saturday Night Live alum!
The non-co-stars chat about Hader’s favorite SNL impressions, Schumer’s echoing vagina, and the sexifying power of a jacket!
Check out the video (below) to see what happens when the actual Bill Hader shows up!