Nobody mentioned Emsisoft Anti-Malware? It has phenomenally good detection rates (it uses two detection engines, one of which is [currently] BitDefender's). That, and MalwareBytes Anti-Malware (MBAM), are my favorites.
CCleaner isn't really a malware/adware scanner, but I use it to clean up temp files, too.
The best malware removal tool is a recent clean image restore!
lol, yes... I used to use PING for this (PartImage is Not Ghost), but since UEFI came around they were slow to implement if (not sure if they ever did), so now I just use CloneZilla. This will also get rid of pesky boot-sector stuff. I _always_ do a clean install or restore after a malware detection, just to be safe... but it's still fun to try to clean it yourself and understand what it's doing. (I only got infected once in my whole life that I know of, I'm still not entirely sure how, but I think it was a Silverlight vulnerability since that's the only plug-in I think I was using).