Many stars would shudder at the thought of someone finding footage of their first movie or TV roles.

So, we can't exactly blame Liam Neeson for seeming a little embarrassed when Jimmy Fallon did just that on a recent episode of The Tonight Show!

The hilarious video features a very mustachioed Liam starring in a BBC film "about trains in Northern Ireland," playing multiple characters.

"I'm stumped, I don't know what to say!" the actor quipped to Jimmy after watching his onscreen debut.

Watch the video below!