As for slightly more spicy brews, my pet deck is Volo, Itinerant Scholar/Street Urchin with Mind Over Matter, as a means to draw the deck, make infinite mana, and kill the table with a shockingly resilient midrange deck
The Tarkir: Dragonstorm Commander decks have started getting spoiled earlier than usual
Cast anything that gives Greven haste in Rakdos Cast Greven, attack with haste, attack someone with no dorks or just one with menace, sacrifice Dreadnought to draw 12 and lose 12 life, now it's 17/5 for the turn
Who/What/When/Where/Why This is my favorite Un- card for a bunch of reasons, but mostly because its one of the best, most interesting, and perfectly suited cards there is in an Un-set