There's a new version of CCleaner out now, which comes with a few extra features (such as x64 version and drive wiper):
http://www.piriform.com/ccleaner
You can download the new version from here:v3.00.1303 (28 Oct 2010)
- New CCleaner 64-bit native EXE.
- New UI graphics and icons.
- New internal scanning architecture.
- New Drive Wiper tool screen under Tools section.
- New Intelligent cookie keeping functionality.
- Improved support for IE9.
- Improved support for Google Chrome.
- Improved HTML5 Database Storage cleaning.
- Added support to clean Microsoft Silverlight Isolated Storage.
- Added support for AVG AntiVirus 10.0, Audacity, LogMeIn Hamachi, BitTorrent and Windows Game Explorer.
- Improved support for Vuze.
- Added new environment variables: %SystemDirectory%, %SystemDirectory32% and %SystemDirectory64%.
- Improved Registry backup to address problems when saving values.
- Improved cleaning Windows Log Files for 64-bit OSs.
- Many UI improvements and bug fixes.
http://www.piriform.com/ccleaner