**Tell me the quickest way to slice potatos **
Chainsaw, duh.
Get the wife to do it
What, exactly, is “half a hole”?
either the Sledge-O-Matic™ or a 12-gauge shotgun are extremely quick…
To quickly cut up potatoes I use my apple peeler corer slicer thingy (like this).
That wasn’t very clear, was it? The bottom half of the thing has an indentation in it, to keep the thing you are slicing from rolling off when you bring down the blades. The rim around the hollow has slots, so the blades can cut all the way down.
It looks a bit like a soapdish with a gate of blades hinged to one side.
Oops. Never mind. I thought you were asking me.
I must half-disagree.
The mulching mower is great for hash browns, but for slices, you need to go with a regular blade; make sure it’s sharp.
I concur with the mandolin. I use it, and have a neat scar on my thumb to show for my troubles. I took everything off right to, but not including a tendon. It was sorta neat to see the mechanical operations of my thumb knuckle. The problem with my mandolin is that the guard is actually more dangerous that going commando. Also, you could use a box or hex grater with a slicing side and I have what amounts to the slicing side of a box grater on a handle that I have used with some success. If you like industrial, I might recommend a deli slicer just ‘cause they are sooo freakin’ cool. There is also the aforementioned food processor and the crank style slicer/shredder that is usually seen grating parmesan cheese. I don’t recommend the food processor or the handheld slicers for lack of uniformity. The box cutter is passable, the mandolin (guard?..what guard?) is perfect.
If you use the chainsaw, be sure to use a food-grade chain oil to avoid nasty petrochemical contaminations.
Nitpick for you all: a mandolin is a musical instrument. A mandoline is a cooking implement. However, if misused, the latter can make you sing the blues.
Now I’m recalling the movie Bennie & Joon when they made french fries using a tennis racquet. Think I’ll give that a try this weekend. too much funny.
Of all the crap Popeil has made through the years, the Veg-O-Matic is actually a useful tool. My mom’s from the 70s still works. You can get one on ebay for a little bit of nothing.
Note: mpeg file.
I think that fiddling with some dodgy contrivance (and cleaning it!) can’t possibly be easier than cutting up a potato, unless, of course, you’re peeling them first. If you’re doing that, then I can’t help you. :rolleyes: 
Back in the glorious '70s, we had a very handy kitchen device that was a dedicated french fry maker. It was a potato-sized stainless steel box with an open top, and it had a lever on top that drove the back end of the box up to the front, forcing the potato through a sharp grid, for perfect fries.
It was awesome. I miss it.