2/16/2012: I would also suggest getting these free apps from the Playstore. Android Assistant+18 by Aaron, File Manager by Rhmsoft, Clean Master, and if your device is rooted, DroidWall. Use File Manager to get to access your downloads folder.
Android Assistant has a lot of useful tools including an app backup and app to SD card utility.
File Manager is a very good app with no time limit like some other free file managers have.
DroidWall (for rooted devices only) is a nice little 'firewall' app that does not have any 'permissions. It lets you "whitelist/deny" internet access for any installed app. Works great! Especially useful for people who have limited data plans.
Clean Master cleans up caches and old unused data from your device.