I run a few.
Gravekeepers is one of my favourite decks, simple and easy to use and good fluency between combinations. Another is my dinosaur deck, but it requires me to remove most of my cards form play; that is, most of my dinosaur monsters to boost my rex infinity (or something along the lines of that XD; can't remember). My last deck is just a mix of cards. I tries running a sphinx deck (Sphinx teleia, andro sphinx, Thenien the great sphinx etc) but it is just to incoherent. Strong cards, but they're hard to make combos out of, especially when most of the deck relies on Pyramid of Light.
What about you? You have an interest in YGO?