Child murder, priest murder, Barney the dinosaur murder, Mario murder, Buddha murder... really, just murder murder; nothing is sacred. This Doom mod's genre seems to be, as Double Fine's JP LeBreton puts it, "Be Offended." No stone left unturned—this might have a little to do with how this mod mashes just about every Doom mod in existence in one package.
Though old, I played some of Grezzo 2 this morning and yes, it very much delivers on what it promises in the above trailer. More, really, since you can't even see all of the crazy things included.
If Duke Nukem: Forever disappointed you, you might want to give this a download. I got it here. It's in Italian though (hence the amazing song), just so you know.