[unruhjonny]

Creepers are nice as mentioned because they make getting under, and out from under your car much easier;
I do get a little annoyed when the creeper moves when I am trying to torque something;
I get much more annoyed when the creeper doesn't roll where i want it to because of little bits of dirt or pebbles...

My first creeper was an old fashioned flat wood kind, I rearely use that one now because the steel wheels jam up too easy;
My second was a colapsable one that can turn into a rolling seat;
I do find that more often than not I skip both creepers and use carboard that I keep around for just that use.