Eli Roth hosting the TMZ “After Dark” tour might sound like a dream … but, it really happened Friday — on the same day his new movie opened in theaters.

The director and actor jumped on the bus to show fans around Los Angeles … and, gave them an inside scoop on “Dream Eater” — by far the scariest movie of the year — which Roth also happened to produce.

It’s a found footage flick — think “Paranormal Activity” and “The Blair Witch Project” — that touches on sleepwalking … which Roth says he can kinda relate to since he used to get horrible sleep paralysis and night terrors.

The bus passed the Chateau Marmont — which some say is haunted … though Roth joked it’s really only haunted by a bunch of out of work Hollywood types.

Eli seemed impressed at how rowdy our guests get … partying the night away at popular L.A. hotspots while knocking back a drink or two. If they need a bit to eat, Roth recommend In-N-Out … and, he’s got a great Russell Crowe story about the fast food chain ya gotta hear to believe.

Roth is just one of many stars who have hosted the TMZ “After Dark” tour … with big-time celebs like Ray J, Chanel West Coast, ‘Bachelor’ Grant Ellis and more rocking the bus.

We recently spoke to rapper Kid Ink who said he’s down to host, too … so ya never know which of your favorite celebs might want to take over duties.