Here are some must have Cydia sources/repos for those of you who have a jailbroken iPhone, iPod Touch or iPad.
note: I will be adding more cydia sources soon!

    Sources/Repos:

• http://apt.modmyi.com
  
• http://apt.thebigboss.org/repofiles/cydia/
• http://cydia.xsellize.com
• http://cydia.hackulo.us
• http://ispaziorepository.com
• http://iphone.hackndev.org/apt/
• http://www.iphone.org.hk/apt/
• http://cydia.miphone.ca/repo/
• http://repo.mygreatiphone.com/
•  http://apt.saurik.com/
• http://cydia.touch-mania.com/
• http://cydia.winterboarder.com
• http://cydia.zodttd.com/repo/cydia/
• http://www.sinfuliphonerepo.com/
• http://app.ifonetec.com/cydia/
• http://repository.ripdev.com/