Keep Circulating the Tapes: Unlike the first two films, Stepfather III didn't get a DVD to coincide with the release of the remake. It's probably safe to assume there won't be one anywhere in the near future.
The original was this for a long time in the US, as rights issues prevented a DVD release until 2009.
Mythology Gag: In the remake, the Stepfather kills a neighbor who told his wife that her new husband looks a lot like a picture she saw on America's Most Wanted. John List, the real life serial killer on whom the Stepfather was loosely based, was caught thanks to a neighbor who saw an age progressed photo of List on the aforementioned show.