This one is a pretty standard list for my own personal game play at 2000pts. This list is strong shooting, has enough durability to withstand a lot, and punishes people that get in too close.
2000 Pts - 5th Edition Roster - Imperial Guard 2000pts
1x 4 Company Command Squad @ 150 pts (Unit Type: Infantry; Flak Armour; Frag Grenades; Close Combat Weapon x4; Lasgun x1; Plasmagun x3)
1 Company Commander (Flak Armour; Frag Grenades; Refractor Field; Laspistol; Close Combat Weapon; Senior Officer)
1 Chimera (Unit Type: Vehicle (Tank); Heavy Flamer; Searchlight; Smoke Launchers; Turret Multi-Laser; Amphibious; Mobile Command Vehicle)
1x 7 Psyker Battle Squad @ 145 pts (Psyker (Santioned Psykers Only); Unit Type: Infantry; Flak Armour; Close Combat Weapon x7; Laspistol x7; Psychic Choir; Ultimate Sanction; Soulstorm; Weaken Resolve)
1 Overseer (Flak Armour; Close Combat Weapon; Laspistol)
1 Chimera (Unit Type: Vehicle (Tank); Searchlight; Smoke Launchers; Turret Multi-Laser; Heavy Flamer; Amphibious; Mobile Command Vehicle)
2x 9 Veteran Plasma Squad @ 170 pts for a total of 340pts (Unit Type: Infantry; Flak Armour; Frag Grenades; Krak Grenades; Close Combat Weapon x9; Lasgun x6; Plasmagun x3)
1 Veteran Sergeant (Flak Armour; Frag Grenades; Krak Grenades; Laspistol; Close Combat Weapon)
1 Chimera (Unit Type: Vehicle (Tank); Heavy Bolter; Searchlight; Smoke Launchers; Turret Heavy Flamer; Amphibious; Mobile Command Vehicle)
2x 9 Veteran Melta Squad @ 155 pts for a total of 310pts (Unit Type: Infantry; Flak Armour; Frag Grenades; Krak Grenades; Close Combat Weapon x9; Lasgun x6; Meltagun x3)
1 Veteran Sergeant (Flak Armour; Frag Grenades; Krak Grenades; Laspistol; Close Combat Weapon)
1 Chimera (Unit Type: Vehicle (Tank); Heavy Bolter; Searchlight; Smoke Launchers; Turret Heavy Flamer; Amphibious; Mobile Command Vehicle)
1x9 Veteran Demolition Squad @ 100 pts (Unit Type: Infantry; Flak Armour; Frag Grenades; Krak Grenades; Close Combat Weapon x9; Lasgun x9; Demolition Charge; Melta Bombs; Demolitions)
1 Veteran Sergeant (Flak Armour; Frag Grenades; Krak Grenades; Laspistol; Close Combat Weapon; Melta Bombs)
1x Vendetta Gunship Squadron @ 130 pts (Deep Strike; Grav Chute Insertion; Scouts)
1 Vendetta (Extra Armor; Searchlight; Twin-linked Lascannon x3)
2x Hydra Flak Tank Battery @ 225 pts for a total of 450pts
3 Hydra Flak Tank (Unit Type: Vehicle (Tank); Auto-targeting System; Heavy Bolter; Searchlight; Smoke Launchers; Twin-Linked Hydra Autocannons x2)
1x Ordnance Battery @ 375 pts
3 Basilisk (Unit Type: Vehicle (Tank, Open-topped); Earthshaker Cannon; Heavy Bolter; Searchlight; Smoke Launchers)
You have 16 pieces of armor, along with some heavy support firepower that should be pretty devastating. The demolitions team goes with the vendetta, and if the situation calls for it, scouts forward and disembarks for a first round melta bomb assault. The Psyker Battle Squad is there to break units off the board, especially those annoying Long Fang units etc. The rest of the list is pretty self explanatory.
Tommorrow I will put up a Chaos or Blood Angels, depending on the weather.