This is my team:
Mixed Wall
Spiritomb @ Leppa Berry (has good Def. IV's)
252 HP/80 Def./176 Sp. Def.
Impish Nature/Pressure
Sucker Punch (max PP)
Taunt
Spite
Pain Split
Taunt to ensure that the foe attacks, Sucker Punch gets STAB and always goes first, despite Spiritomb's horrible speed. Speaking of Spite, Spite takes advantage of Spiritomb's low speed to cut the forced attack's PP by 4. Will-O-Wisp burns the enemy to make it even harder for the enemy to get a physical attack down, and likely will scare them away to the shelter of someone like Blissey. When this happens, Spiritomb's job is done, and it switches out to someone with high attack, like Tauros.
Special Sweeper:
Charizard @ Wise Glasses
(I don't know; this is the very first Pokemon I EV trained, but I know for sure it has 252 Sp. Atk.)
Modest Nature/Blaze
Fire Blast
Sunny Day
Solar Beam
Air Slash
This is basically your average SunnyBeaming Charizard, EXCEPT for one thing-Air Slash. Air Slash beats the Heracross who is unlucky enough to switch into Charizard, and also acts as a substitute for Fire Blast in some occasions when you can't afford to use two turns to use Sunny Day and then Fire Blast, or when Fire Blast is out of PP.
Physical Sweeper:
Tauros @ Choice Band
4 HP/252 Atk./252 Spd.
Adamant Nature/Intimidate
Zen Headbutt
Return
Earthquake
Outrage
Zen Headbutt obliterates Gengar. Period. Return is a strong attack which gets STAB. And Outrage? It can be a big help against dragons who don't know it can learn that move. EQ is a cliched move, and is expected on Tauros, but hey, it's got a lot of type coverage.
What I would like on my team, but I don't know if it's supportive of the rest of it is this:
Mixed Sweeper:
Infernape @ Life Orb
252 Atk./24 Sp. Atk./232 Spd.
Adamant Nature/Blaze
Overheat
Close Combat
Stone Edge
ThunderPunch
The Nasty Plot/Overheat combo. And what a fine combo it is. Upping Special Attack two stages, scorching your foes with Overheat, thus putting your stats back to normal, is so ironic, that it could actually work. ThunderPunch destroys Gyarados. (Poor Gyarados...I used to have one on my team.) If I wanted to Burn, I'd send out Spiritomb first.
Physical Wall/Pseudo-Physical Sweeper
Rhyperior @ Razor Claw
252 HP/6 Atk./252 Def.
Adamant Nature/Solid Rock
Earthquake
Stone Edge
Megahorn
Avalanche
This moveset comes from Smogon. (Just telling you before you start flaming me.) The item and EV's do not, however. I feel Razor Claw is better than Choice Band for this reason: While Choice Band increases Attack by 50%, critical hits double the power of the move itself. This can be handy especially while using Stone Edge, which, with its high critical hit rate, makes critical hits have a 1/4 chance of happening, and if it happens, then Stone Edge will do a massive 200 damage, which can probably do a 2HKO on Gyarados, not to mention OHKO Charizard.
Special Wall
Blissey @ Leftovers
252 Def./40 Sp. Atk./216 Sp. Def.
Calm Nature/Natural Cure
Aromatherapy
Ice Beam
Softboiled
Toxic
Yes, this moveset is "Cleric Blissey" from Smogon, but I like it. The reason I like it is because Toxic slowly but steadily eats away at your opponent's HP, and the damage it takes at the end of each turn doubles every turn.