It has been said but what about a grouped handy soft to keep Windows clean:
-Useless files erazer: internet & other softwares cache, temp files, etc… (as CrapCleaner can do).
-Registry cleaner (as RegCleaner).
-HDD Defrag
-Memory Defrag
-etc…
I like this idea, but unfortunately it does not have anything to do with Security, which is mostly what Comodo develops. Also Comodo is very busy trying to finish development on their antivirus product and improving their firewall.