Well, I just had my 3rd Gantz related dream. I was in a black suit with other people (some were my friends). None of the Gantz characters, just me and others.
fought dinosaurs, one of the Gantzers almost died, then fought vampires
The thing with dreams is that you can 'forget' things and not realise it. Like when the dinosaurs started shooting fireballs, I went "whoah!"
now these Vampires... I'm pretty sure they were from the OC. Lost the fight though, nuts. They were invisible, and you could only see them with a 'camera' thing. I guess those were the x guns.
I must really like the series (which I do)
I also think that Gantz in general is good for dreaming, I mean, like... the 'rules' aren't so defined, the black suits are catchy, the powers generic, sorta.