At 14:20 Typhoon says "Fe, Fi, Fofum, I smell the blood of a Grecian man". In the classic tale of Jack and the Beanstalk, the giant smells the blood of an Englishman.
At 23:10 Hercules warns Leanna "Once you have Harpies, you can't get rid of them." The ending credits state "No permanent cases of Harpies were reported during the production of this motion picture." These are obvious puns on a sexually transmitted disease.
At 32:00 Hercules says to Typhoon " What we have here is a failure to communicate". This is a direct quote from Cool Hand Luke (1967).
At 41:54 the three Harpies begin to mimic a routine made famous by The Three Stooges. The same gag is performed by reanimated skeletons in Army of Darkness (1992), another Bruce Campbell-Sam Raimi collaboration.
The first episode of the series to include two characters dancing a tango accompanied by castanets