Product review (5 stars): Is your dryer not heating? This is probably what you need!
If your dryer works OK, but the heat is weak or comes on, turns off, comes on again, and your clothes never seem to get dry... For a few bucks, it is worth ordering a pair of these and replacing them in your dryer. Apparently, this part has been in clothes dryers since there have been gas clothes dryers.

If I hadn't torn my dryer apart to test all of the relays, it would have taken me about 10 minutes to replace both of these things and I would have been back up and running. Since I wasn't sure what the problem was, I had pulled the whole thing apart and tested all of the components -- you would be surprised how few parts there are in a gas dryer. At any rate, these are so inexpensive, they're definitely worth a shot.