Norton AntiVirus 2009 is Surprisingly Good

I've been down on Norton/Symantec products in the past, but Norton AntiVirus is the best antimalware application I've ever used. It's fast, efficient, and protects Firefox. I got my copy for $20 after rebate at Staples, and there might be other good deals elsewhere.

Update: I now more fond of Microsoft Security Essentials, which is free.