The recipe with the plastic bag was called Cheat's Omelette. My nan always used to make my brother fantastic omelettes (before I found out I liked eggs) and she used a special omelette pan. I was always too intimidated to make omelettes after that.
Then a friend of mine who is lusting after a TMX has her sister telling her how wonderful the TMX omelette is. So I figured I would give it a try. Best bits for me was that a) I didn't have to clean anything, as the water in the bowl just got tipped out and the varoma didn't get speck of anything on it either; b) I didn't have to worry about mucking it up; c) I didn't have to stand over it (my least favourite style of cooking atm).
I have to say I wasn't very impressed with the bag omelette and I hate to think about what leaches out of the plastic while it cooks, so I actually only did it twice. Never have to again now.