This Angry Mama is bound to make you happy! If you haven't worked up the courage to take a stab at cleaning your microwave yourself, then let me introduce you to the Angry Mama Microwave Cleaner. eBay Canada has the Angry Mama for $2.90 CAD including shipping.
Just add vinegar and water to Angry Mama and she does the rest. I need more trinkets like this in my life! She will blow off some major steam in the microwave which results in crud and sticky residue being removed.
You can even use a few drops of lemon juice if you want your microwave to smell Mr. Clean fresh.
Shipping is entirely free, even though this Angry Mama has such a small price tag.