Maine coons, Ragdolls, and Norwegian forest cats look a lot alike so if your cat matches any of these it is probably a mix of one of these : Fluffy, long haired, have tuffed wispy ears, a ringed tail(some do some do not), a silky velvet coat, a beard like thing on there face, points on the side of there face, have a huge tail, are larger then most cats, have large ears, and extremely soft fur. These pictures up top are examples of Maine coons, Ragdolls, and Norwegian forest cats. These cats are only about three months old, and as you see they are BIG for there age. Take note of the ringed tail, large body and the tuffed ears. If you like this post you might also like these other posts on my blog: Leo the Maine coon, Norwegian forest cats(similar to the Maine coon), About Maine coons, a Maine coon in the snow and others. Also Turkish vans, and the American curl look a lot alike. If you like you can send me a pic. of your cat on a comment and I will see if I know what breed it is.
Here is a list of other cat breeds and there pictures http://en.wikipedia.org/wiki/List_of_cat_breeds You might think you have a Siamese but it could be a Tonkinese Or if it is long haired it could be a Balinese, or Birman.
If you think you have a regular short-hair then it could be a: American short-hair, a Korat or any some other I would appreciate any comments from you. Also to see all my posts, they are all on the right side..