In last Sunday's fantastic episode of Mad Men (check out Jacob's recap here), John Slattery (AKA Roger Sterling) once again reminds us why he's one of the best actors currently working on TV. Roger and his young wife attend an LSD party hosted by Dr. Timothy Leary and takes the drug for the first time. The result is perfect Mad Men—hilarious, touching, and weird. Slate interviewed Slattery about the making of the scene, and this is what he had to say:

Obviously we have a very short time to put all this stuff together. There were a lot of special effects they have to lay over—a gag where Roger’s cigarette shrinks, and then the mirror stuff. Looking down at the bill and then looking at her in the cab—you know, it’s all on a stage in the car with a green screen, and them talking us through the beats—“Now look at the bill, now look at her.” And it was all really specifically laid out—the music coming out of the vodka bottle was there in the background. I took the cap off, and they played the music. I put it back on, and it would shut off. So they do everything they can to help you out.

Read the rest here! And for god's sake, even if you already watched the LSD scene, watch it again. It's so great, and gets better.