The subject title says it all, just post the team that you like to use most in the game and when facing others online.

Marowak
Rock Head

Thick Club

Rock Slide
Earthquake
Bonemerang
Double-Edge

Dragonite
Inner Focus

Leftovers

Fly
Aerial Ace
Dragon Claw
Extremespeed

Metagross
Clear Body

Muscle Band

Earthquake
Meteor Mash
Bullet Punch
Zen Headbutt

Magneton
Magnet Pull

Wise Glasses

Shock Wave
Signal Beam
Thunderbolt
Flash Cannon

Blaziken
Blaze

Charcoal

Blaze Kick
Blast Burn
Sky Uppercut
Thunderpunch

Feraligatr
Torrent

Mystic Water

Surf
Crunch
Ice Fang
Hydro Cannon

My in-game team is:
Typloshion♂
Solar Beam
Rock Climb
Earthquake
Flamethrower
Ampharos♂
Thunder
Focus Blast
Strength
Iron Tail
Gyarados♂
Surf
Whirlpool
Rock Smash
Waterfall
Victreebel♂
Leaf Blade
Cut
Sludge Bomb
Leaf Storm
Pidgeot♂
Steel Wing
U-turn
Fly
Return
Lugia
Psychic
Aeroblast
Blizzard
Thunderbolt

Typhlosion
Held Item: Charcoal

Moves:
Flamethrower
Earthquake
Strength
Thunderpunch

Kingdra
Held Item: Mystic Water
Ice Beam
Waterfall
Dragon Pulse
Dragon Dance

Ampharos
Held Item: Magnet
Thunderbolt
Signal Beam
Power Gem
Thunder Wave

Crobat
Held Item: Poison Barb
Poison Fang
Bite
Fly
Confuse Ray

Scizor
Held Item: Muscle Band
X-Scissor
Swords Dance
Steel Wing
Night Slash

Espeon
Held Item: TwistedSpoon
Psychic
Shadow Ball
Energy Ball
Psybeam

I really love this generation, but the Elite Four is vastly underpowered. Except for Lance's rematch Garchomp. That thing will still defeat me after all these years... *Cries*

Luckily enough for me, i have my dream team HG is the one game i've never reset, and as a result i have over 100 hours of in game time and a ton of imported pokemon from platinum. i'm pretty busy right now so i can update this move with items, moves, etc. later. but from what comes to mind right away, i'll just name some of the many that i own.

level 100 Kyogre
level 100 Mewtwo
level 100 Lugia
level 100 Charizard
level 100 Meganium
level 70 Palkia/Dialga/Giratina
i'll give you an actual team once i have the time.