Okay, well, I'm pretty sure I know what did it.
My mom and I just got home a little while ago, my dad was still at work (he's a general contractor, he works late usually). We walk into the kitchen and literally everything is either not where it should be, or on the floor. The T.V. we had in the kitchen is gone, and so is the stereo. I went in my room, same thing, only this time, my katana, the katana that has no monetary value but instead sentimental value because I worked 7 whole years to get it in my Karate class, is gone. What's incredibly strange is why my Wii or PS2 are still here, along with our computer. My parents' room looks identical as well, except that this time jewelry is missing. The safe in my parents' closet is still closed but has one hell of a dent on the front of it, and is also on the floor.
Looks like my parents will be spending the rest of this evening talking to the police, and I'll be busy fixing a wall in my room through which I punched a hole out of pure rage. Oh, and did I mention that my $2200 stereo system in my room that I got for Christmas a couple years ago is also gone?