Oven door glass is one of those things that you never think to clean, but gets oddly dirty. Grease splatters, burnt food bits and who-knows-what-else can build up on the glass surface, obscuring the view into your oven.
Nice, clean glass. Flickr photo by KBBNewsPics
The good news is that cleaning oven door glass doesn't involve a lot of time, effort or scrubbing. Actually, you don't even need any specialized products. I'm a huge fan of baking soda as a household cleaner, because it's cheap, won't damage any surface and has great scouring power without weird chemical scents.
So here's how I use it to clean a glass oven door: Simply add enough water to about 1/4 cup of baking soda, to form a thick paste. Next, open the door and spread the paste across the (dirty) glass with a sponge. Let sit for about 20 minutes. Then, wipe away the baking soda paste with a damp sponge and finish by buffing with a paper towel. The glass will be good as new!