To date, there have been seven 'Superman" movies, including "Supergirl" and the George Reeves "Superman Vs. the Mole man". Of these seven, one is very good, one is okay, and five are bad. As they prep another reboot only four years after "Superman returns", Rotten Tomatoes shows us the Superman movies that died in development hell.
None of these sound any good.
Check it out.