So this has bothered me for ages, I have never been able to figure out what the movie was despite many attempts. When I was a kid (it was around New Years in either 2000/2001, or 2001/2002) my family was watching a movie on TV about aliens masquerading as humans in modern-day society who were secretly killing and eating people. The most prominent characters were the alien mom, who looked like a classic stepford wives homemaker with a beehive and sequined glasses; an attractive blonde teenage daughter, and a black guy who was involved with the family somehow (friend? neighbor? roommate? I'm not sure) and he began to realize that they were responsible for mysterious murders around town, when they couldn't properly explain where they got the odd-looking roast on the dinner table. I also remember that when the aliens got cut or stabbed, they bled thick metallic blue goo.
One of the reasons I have trouble identifying it is that my mom was just flipping through channels so we started watching in the middle of the movie, and then maybe 30 minutes into it she changed her mind and I never saw it again. I've been trying for years to identify this movie so I could finish watching it.
It probably aired on Sci-Fi channel, it that helps at all!