KAOS's British Baddies, "Mr. Snead" & "Mrs. Neal" are a parody of "Mr. Steed" & "Mrs. Peel" (aka The Avengers (1961)).
"Get Smart" and most of it's storylines are famously set in Washington, D.C. However, in the opening shot of the episode, we see the exterior of the Los Angeles Coliseum!
The CONTROL team's track jerseys read "FREE WORLD" and KAOS' read "IRON CURTAIN."