Avast is good stuff.

One night, I left my stereo on, which is connected to my PC. It was turned all the way up cause I was listening to metal earlier that night. I start a virus scan at 1 am, and im asleep now. At 3 am, my speakers start blasting that siren sound and say "WARNING WARNING", and I just about shit my pants as I flew out of bed, and bust my head on my ceiling fan.

Other than that, Avast is great lol.