Lord You Know Who 
@Background Pony #82FC
Debatable (most people agree that b-movies have a certain charm to it. At the very least, they make for hilarious movies).
That being said, he also made the 90s “Fantastic Four” movie (which many agree is better than the 2000s ones or the 2015 one), and “Frankenstein Unbound”, which is for the most part a genuinely good movie.
Jack Nicholson himself said he finds no shame in having started his career in Corman movies.