The dancing doctor in this episode (Dr. Simon) replaced Dr. Steel who had appeared in previous episodes.
The 8x10 black and white photo that Max rips to pieces is a shot of singer/ukulele player Tiny Tim, who had a novelty hit record with "Tiptoe Through The Tulips" that year.
Herb Talbot and the Tijuana Tin were based on band leader Herb Alpert and his band The Tijuana Brass. Alpert was one of the biggest recording artists of the 1960's and was the co-founder of A&M Records with Jerry Moss.
When Smart is looking through the photos, the first he sees is that of Alfred E. Neuman, the mascot for MAD magazine.