tweaks that could make the lists....
AirServer - Stream audio, video, photos from your Mac and other iDevices(available for Mac too, awesome).
AlertArtist - Customize popup alerts with colors and FX.
Alphacon - Customize icon and label transparency settings. FREE
Crash Reporter - See which tweaks causes the crash, and send useful crash reports to developers. FREE
FBphotosave - Save photos from the Facebook app.
MakeItMine - Change your carrier name to whatever you like. FREE
Netatalk - it gives access to your iDevices wirelessly, thru your Finder(Mac only), requires a reboot after install to show up. FREE
PhotoMail - Add photos to mails, include multiple photos.
PowerUp - Supercharge the power screen with extra options for reboot or respring and safe mode. FREE
TVOut2 Mirror TVOut - Mirror your idevice with options to fill screen. FREE
Webscrollian - Faster content scrolling for web views. FREE
xBackup - Backup/restore all your packages and sources.
Since this is a useful thread, with more additions to be suggested, but too many posts for people to read to see if mentioned before, can this thread be cleaned up?, i see a lot of useless posts...thanks.