When we had my wifes Grand Prix GT windows tinted last week (see the "your ride" forum) the tinting place said to clean the tinted insides of the windows using Windex and paper towels.
Two thumbs up for using horizontal strokes on one side and vertical on the other. That makes it really easy to tell which side you have streaks on.
Also, on the *outside* (I know he said his streaks are on the inside) I tried RainX and products like that, but in the end I've become a big fan of pristene, clean glass with nothing on it. Car washes that spray wax all over your car leaves a layer on the windows. Cut right through that using Windex or other window cleaner with ammonia. I know some people wax their windows. I don't. Just windex! And clay bar your windows, that works well too!
97 SE, teflon wiper blades, Dunlop Sport A-2 tires, Leather steering wheel cover, Pioneer DEH-P480MP mp3 CDRW head unit, Pioneer 12-disc changer, iPod hookup, Boston Acoustic 3 way 6x9'*, Boston acoustic separates in door pods, Alpine 4 channel amp in trunk. Magnaflow dual outlet muffler and Ractive stainless tips. Autozone rice pipe and K&N 4750 intake kit. Clear corner lights. Energy Suspension end links.