RecycleBinEx is an awesome recycle bin app for your Windows 7 taskbar
It's made by the same developers who created FCleaner -- a very capable CCleaner alternative. Via the RecycleBineEx Jump List you'll be able to quickly empty deleted files right from your task bar. You're not limited to wholesale purging, however -- RecycleBinEx can also delete items of a certain age (6 pre-configured options are available).
Launch the main program window and you've got the option to sort by data and filter your bin's contents -- handy if you're trying to retrieve the file equivalent of a needle in a haystack. The app also features command line scripting and integrates with the Windows Recycle Bin's context menu and you can even set it to auto-delete files that are older than a certain number of days.
RecycleBinEx is a free download and runs on Windows XP or newer.