Newest Boros list. All credit goes to the Fires of Salvation crew. Especially Alex!

Deck
Lands (24) 4x Clifftop Retreat 10x Mountain 3x Plains 4x Sacred Foundry 3x Slayers' Stronghold Creatures (26) 4x Boros Reckoner 4x Hellrider 4x Nearheath Pilgrim 4x Restoration Angel 4x Stonewright 4x Stromkirk Noble 2x Zealous Conscripts	Spells (10) 4x Boros Charm

...

I kept hearing talk about this infamous Dark Naya deck and I had to see what all the fuss was about. Turns out, I really like this deck. I get to play some of my favorite cards, and it is fairly competitive. My list is a little different than most due to substituting Zealous Conscripts for Angel of Serenity. This is just personal preference, plus I like the interaction between Conscripts and Falkenrath Aristocrat. Anyways, here is my list:

Deck
Lands (24) 4x Blood Crypt

...

Updated list to reflect GTC changes. Not much, except for Reckoner.

Deck
Lands (23) 1x Hellion Crucible 22x Mountain Creatures (29) 4x Ash Zealot 4x Boros Reckoner 4x Hellrider 2x Lightning Mauler 3x Pyreheart Wolf 4x Rakdos Cackler 2x Stonewright 4x Stromkirk Noble 2x Thundermaw Hellkite	Spells (8) 4x Pillar of Flame 4x Searing Spear	Sideboard

...

Just threw this together. Kind of a combination of Kibler's list and Greg Meier's list. Haven't tried it out yet, but I'm hopeful. My local meta seems to have problems dealing with Predator Ooze.

Deck
Lands (23) 11x Forest 3x Golgari Guildgate 4x Overgrown Tomb 1x Swamp 4x Woodland Cemetary Creatures (26) 4x Arbor Elf 3x Deadbridge Goliath 3x Dreg Mangler 4x Lotleth Troll 4x Predator Ooze

...

Decided to go back to my Zombie list since it's more fun to play. Less red this time, super heavy on the black. Added Blood Artist back in. He's just so strong and can totally shift the game to your favor.

Deck
Lands (23) 4x Blood Crypt 4x Cavern of Souls 4x Dragonskull Summit 4x Rakdos Guildgate 7x Swamp	Creatures (27) 3x Blood Artist 4x Diregraf Ghoul 4x Falkenrath Aristocrat 4x Geralf's Messenger

...

Changed up my GW list after rotation:

Deck
Lands (24) 2x Cavern of Souls 7x Forest 3x Gavony Township 4x Plains 4x Sunpetal Grove 4x Temple Garden Creatures (25) 3x Arbor Elf 1x Armada Wurm 4x Avacyn's Pilgrim 4x Centaur Healer 4x Loxodon Smiter 4x Restoration Angel 1x Sigarda, Host of Herons 2x Silverblade Paladin 2x Thragtusk	Spells (11)

...

Think I finally finished my Damia deck. Haven't had a chance to play it yet, but I am pretty satisfied with the list.

Deck
Commander 1x Damia, Sage of Stone Lands (39) 1x Academy Ruins 1x Alchemist's Refuge 1x Ancient Tomb 1x Bayou 1x Creeping Tar Pit 1x Deserted Temple 1x Drowned Catacomb 7x Forest 1x Hinterland Harbor 5x Island 1x Maze of Ith 1x Misty Rainforest 1x

...

Finished my Talrand Delver deck. Haven't gotten to test it out yet, but I'm hopeful.

Deck
Lands (18) 4x Glacial Fortress 13x Island 2x Moorland Haunt Creatures (16) 3x Augur of Bolas 4x Delver of Secrets 2x Phantasmal Image 4x Snapcaster Mage 3x Talrand, Sky Summoner	Spells (26) 4x Gitaxian Probe 3x Gut Shot 2x Mana Leak 2x Mental Misstep 1x Mutagenic

...

So excited about trying this out. Really curious to see how Mikaeus will interact with the rest of the deck.

Deck
Lands (24) 4x Cavern of Souls 2x Clifftop Retreat 3x Forest 3x Gavony Township 1x Mountain 4x Plains 2x Rootbound Crag 1x Sunpetal Grove 4x Temple Garden	Creatures (30) 4x Avacyn's Pilgrim 3x Borderland Ranger 4x Champion of the Parish 2x Fiend Hunter 3x

...

Just a concept deck that I threw together. Milling is the main focus, but damage from Jace's Phantasm is another win-con.

Deck
Lands (22) 3x Cavern of Souls 19x Island Creatures (10) 3x Augur of Bolas 3x Jace's Phantasm 4x Snapcaster Mage Spells (28) 3x Dream Twist 3x Jace, Memory Adept 4x Mana Leak 4x Mind Sculpt 4x Ponder 2x Sword of Body and Mind 1x Sword of War

...

Something I threw together for fun:

Deck
Lands (22) 2x Cavern of Souls 4x Glacial Fortress 9x Island 1x Moorland Haunt 6x Plains Creatures (16) 4x Blade Splicer 4x Delver of Secrets 4x Restoration Angel 4x Snapcaster Mage	Spells (22) 2x Gitaxian Probe 4x Mana Leak 4x Ponder 2x Sword of Feast and Famine 2x Sword of War and Peace 4x Thought

...

Here's my RUG Delver list:

Deck
Lands (21) 4x Cavern of Souls 4x Copperline Gorge 8x Island 1x Mountain 4x Sulfur Falls Creatures (14) 4x Delver of Secrets 4x Huntmaster of the Fells 2x Phantasmal Image 4x Snapcaster Mage	Spells (25) 1x Bonfire of the Damned 2x Gitaxian Probe 1x Incinerate 4x Mana Leak 3x Pillar of Flame 4x Ponder

...

Going to try this deck out.

Deck
Lands (23) 2x Desolate Lighthouse 11x Island 6x Mountain 4x Sulfur Falls Creatures (12) 2x Delver of Secrets 1x Dungeon Geists 2x Invisible Stalker 1x Phantasmal Image 4x Snapcaster Mage 2x Stromkirk Noble	Spells (25) 2x Gitaxian Probe 4x Incinerate 4x Negate 4x Pillar of Flame 3x Ponder 2x Runechanter's Pike

...

Here is my Red (and slightly greenish) list that I am going to try out at FNM this week. Not sure how it will do with only 22 lands, but we'll find out.

Deck
Lands (22) 4x Copperline Gorge 14x Mountain 4x Rootbound Crag Creatures (15) 3x Chandra's Phoenix 2x Huntmaster of the Fells 2x Spellskite 4x Spikeshot Elder 4x Stromkirk Noble	Spells (23) 1x Ancient Grudge 4x Faithless Looting

...

Revamped my G/R deck with some new cards. Bonfire is awesome.

Deck
Lands (23) 4x Copperline Gorge 9x Forest 2x Kessig Wolf Run 4x Mountain 4x Rootbound Crag Creatures (22) 4x Birds of Paradise 1x Daybreak Ranger 4x Huntmaster of the Fells 4x Llanowar Elves 2x Phyrexian Metamorph 4x Strangleroot Geist 2x Wolfir Avenger 1x Wolfir Silverheart	Spells (15)

...