I have a collection of vintage Regular 8mm cameras that I like to shoot with sometimes, just as a hobby. I shot a few rolls of Kodachrome movie film ("Cinechrome 40") with them...before I realized that Kodachrome film wasn't going to be available anymore.
Ektachrome 100D does look really nice though. I've shot several rolls of it. The good news is that it seems to work fine in pretty much any 8mm camera. I have some
really antique cameras, including a Kodak Cine 8, from the 1930's! At first I was worried it wouldn't turn out and the film would just get overexposed because the shutter speed was too slow on those really ancient cameras. But it turned out fine.
I buy most of my movie film from Dwayne's Photo, and I also send it back there to get processed. I haven't had any of them transferred to a DVD though. Not yet, anyway. Maybe sometime. I actually watch my 8mm movies on a projector. I figure, hey, if I'm going to do it the old school way, I might as well do it right!
I really like the look of watching an 8mm movie on a projector. There's a totally different feel to it. You feel like you're watching a vintage movie...except you see modern cars and buildings!