[tyree732]

The Pepsi segment isn't integrated advertising, as Ira Glass notes:

"And of course, feel free to pop open a delicious Pepsi as you listen to this next act, Act One. By the way, we are not getting paid for that at all."

I'm guessing it just happened to be the best available audio interview with William Cimillo.

[scott_s]

I think shizcakes knows that it was not integrated advertising into This American Life, but into the program from the '40s. shizcakes' comment, then, is likely a comment on how hearing the integrated advertising "sounds normal" for a program from the '40s, but does not "read normal" in text.