Mine are:
CID (really a nice thing for passing your time...stories are not completely true though)
Crime Patrol (a really nice program based on real life incidents)
Ancient Aliens (a nice thing to watch and make your mind full of curiosity...I don't watch it much nowadays)
How It's Made (Nice edutainment show)
Gadget Show (Just for time pass)
Modern Marvels (Nice learning things)
101 Things That Changed the World
You have Been Warned
Science of Stupid (Really FUNNY)
Sumit Samhal Lega (Hindi Adaptation of 'Everybody Loves Raymond')
Though I don't watch them all the time...I watch them only during in afternoon or in the night when I am free.