In 'Mork & Mindy', which planet is Mork from?

Which Nickelodeon series featured Miranda Cosgrove running a web show? Which Nickelodeon series starred Drake Bell and Josh Peck? Which series is a spin-off of 'Happy Days' starring Robin Williams as an alien? In 'ALF', what planet is ALF from? Which show is a spin-off of 'The Cosby Show'? Which show is a spin-off of 'Perfect Strangers'? Which show is a spin-off of 'NCIS'? Which show is a spin-off of 'Grey's Anatomy'?