I agree, it really sounds like you're looking for JOI/JOE jerk off instruction/encouragement videos. You can find those on google, they're all shot in first person POV for the most part, except you can't really interactive with them (ie choose what you want them to say/do).

For interactive porn ...

Hey! Sounds cool, I'd definitely check it out if you haven't already scrapped it already. I'm currently really into other Interactive Porn stuff (You might want to check out LIfeSelector's Interactive Porn). IMO theirs is shot beautifully, and really does let you control the aciton.