The best Half Life 2 impression ever.

G-Man & Barney's Voice Actor - Mike Shapiro Interview

[SFM] G-Man Accepts the GOTY Award for Half-Life Alyx

Gman's Animation Reference VS Final

Asking a Billionaire How To Make 1 Billion Dollars?

I Asked A Billionaire How To Get Rich... He Told Me 6 Things (#047 - Mike Shapiro)

Mike S. Shapiro, Author of 'Read The Tape' Gives The Game On His Book | Diversified Game Podcast