In the time I've had my 30D I've not yet had to resort to wet cleaning. Never say never, but I hope I can avoid it.
My method uses a can of compressed air and a sensor pen. The latter is the real star of the show and should not be confused with a lens pen (although it is produced by the same people).
I give the filter surface a quick blast of air, then carefully use the pen to loosen any dust and finally use the air cannister to blow the loose dust away.
Compressed air needs to be used with some care, but apparently Canon service centres use it so it's a legitimate method. The trick is to clear the nozzle of any fluid away from the camera, then press the can firmly against the table top so that its upright. Lastly - use very short sharp bursts. Don't use long blasts because the air tends to freeze and in effect you are firing ice crystals at the filter!
Compressed air also may contain other contaminants like oils, greases from equipment like compressors etc.
A chunk of grease smashed to the filter under pressure may cause serious problems. If you ever manipulate your photographs in any extreme ways, deep saturation, extreme levels, darkening, dramatic contrasts, you will be surprised to find out how much damage your "perfect and easy cleaning" has done already to your sensor.
My experiences with sensor cleaning are spotty at best, even that, I have pretty good manual training in precision work like art restoration, there are always some surprises, and personally, I am avoiding cleaning as much as possible.