Breaking bad is pretty obvious and it also has a prequel called better call saul. Some people havent heard of sauls series but it exists :D The boys from amazon prime which was recently released is also pretty awesome just check out the trailers im sure you will be sold. Oh and definitely DONT start watching got unless you want to be disappointed. Or maybe you can start and stop watching at the end of season 6. Last two seasosn sucked especially season 8.