Not sure if this was mentioned yet, but there was a Sesame Street reference on WWF Raw a few years ago. Shane McMahon was explaining what the letters WCW(World Championship Wrestling) stood for, but also mentioned what else they can stand for. When he got to C, he said "C also stands for Cookie, and that's good enough for me".
Also, when ECW(Extreme Championship Wrestling) was in operation, Rhino was known as the "Rookie Monster". One of the commentators made the joke "Why do they call him the Rookie Monster? He doesn't have blue fur or googly eyes".