John Schwind is the best for regular 8 films. If you want to get a bit more exotic there's also Kahl
http://www.kahlfilm.de/ in Germany. They ship worldwide. They have their own brand Kahl 18UT which is a 50ASA color daylight reversal film. Plus UP 18 & 24 B&W reversal and a few other positve films. Best of all if you just really get into it and want a lot of film cheap. They sell it in 400' rolls which you can cut down yourself provided you have enough camera spools. And if you dont. You can also buy them there. Then there's also Wittner Kinotecnik which is the premier Super, regular, double super 8 and 16mm film seller in Europe.
http://www.wittner-kinotechnik.de//kata ... /index.php
Unfortunately it's all in German. But you can figure it out for the most part or Google it and translate the pages. But in any case the have EVERYTHING there is in the world of 8mm. They have filmstocks in regular 8 (doppel 8) that no one else has. Plus camera spools, accessories, name it, they have it.
As far as labs go, there's Dwaynes in Parsons KS. Best prices, but not the best lab. But overall satisfactory.
http://www.dwaynesphoto.com/
There's Forde Labs in Seattle.
http://www.fordelabs.com/
And Spectra
http://www.spectrafilmandvideo.com/
Yale Film who sells film w/ or w/o processing
http://www.yalefilmandvideo.com/S8_and_ ... egular%208
More expensive, but far more professional.
And of course Pro 8mm
http://www.pro8mm.com/main.php
Most expensive, and most professional, best looking. All they do is 8, super8 and 16mm. Small gague film only.
For the Highest quality hand processing there's Martin Baumgarten. In the world of Super 8 / 8mm there's no one smarter, knows more, or contributed more the the super 8 film community. Plattsburg Photgraphic Services PPS
http://members.aol.com/Super8mm/Super8mm.html
Then you can check this & other sites for listings. There a plenty of labs in the US + Canada, and endless more in Europe.
http://www.littlefilm.org/Labs.20011030103256.html
And if you get REALLY into it like me, you can get your own LOMO tanks from Olexander Kallyanchenko, chemicals from Kodak or others and process your film at home!
Cheers, good luck, have fun and welcome to a great new hobby/ obession!

James E. Stubbs
Consultant, Vagabond, Traveler.