Al supports his claim that 1952 was a great year for America by mentioning that "Ike was in the White House". While Dwight D. Eisenhower was elected President of the United States in November of 1952, he did not actually take office until January 20, 1953.
The arm of the person throwing the tumbleweed into the Bundy's house can be seen.
At the 4 minute and 35 second mark, the flash from an on-set photographer's camera can very briefly be seen flashing on Al's bowling shirt.