You can paralyze Jagged Jimmy J when you have IN < 4 and when you want by choosing the line "How can one TRULY know another, Jimmy? Is it even possible while we are on this mortal coil? Or is it only possible when we free ourselves from our physical bodies?"
You can't get the Bust up Wright's still quest since you can't talk to Ethyl Wright but if you already received the quest before having the Porn Star title, it is still possible to complete it.
Behind the scenes
Strangely, the sentence for paralyze Jagged Jimmy J when you have IN < 4 it's not a normal sentence (normally poorly constructed and difficult to understand) said by a low-intelligence character and looks like more something that an intelligent character could say.
The first sentence in the description of the Porn Star title is a reference to the 1997 drama film Boogie Nights.