I once saw a show on Discovery where some explorers in the arctic used a spraycan of flammable liquid and a lighter to quickly seat a tyre onto a rim. The heat causes the air to expand so quickly and evenly that the tyre seats itself perfectly onto the rim. These are huge 200lbs offroad tyres we're talking about.

As for me, I'll stick to a patchkit or simply carrying around a spare tube. I have glueless patches but for some reason I'm shy about using them. Perhaps it's because I always end up having to tear off at least two pieces of saran-wrap when I go to put leftovers into the fridge. The first try always ends up in a wadded ball. I fear that with glueless patches, I'd have at least half of my fingers tipped with nice airtight seals. On the upside, at least I won't have to worry about finding band-aids. For some reason I seem to have no fumbling problems with traditional glue patching.