My Stepmother Is an Alien (1988)

We guess the idea of a stepmom being from another planet is somewhat better than most people's actually stepmom story, because more times they just end up being evil in a different way! In this classic Sci-Fi comedy, we follow Steven Mills (Dan Aykroyd), who is a somewhat mild mannered, awkward and shy physicist who is now a single father.  One day though, he is approached by the most ridiculously gorgeous woman, Celeste Martin (Kim Basinger), who is a little too interested in his work.  You see, Celeste isn't just a single hottie looking for a warm dad bod to heat up her bed, she IS in fact an alien creature from another planet who took on the form of one of the hottest women on the planet and is looking to fulfill her mission by any means necessary.  Now that the alien hottie has her sexual hooks in Steven, she is looking to marry him so that she can gain even closer access to his all too important work for her own evil gains.  That is unless his daughter Jessie (Alyson Hannigan) can convince him that of the fact that My Stepmother Is an Alien! Dan Akyroyd doesn't shy away from bringing the sexy along with Kim Basinger in their one bedroom scene together, when she comes in looking to seduce him in her silk slip, ripping it open, the always hilarious SNL alum looks like a fuzzy treat in bed with no shirt on in this classic from the 80s!