Some pics of a game the other day, using the biggest army I've commanded solo to date. I offered battle with 15K of Orcs against the combined forces of three mates.  One of my friends loaned me a thousand points of Feral Orks and I loaned him a Warlord to bring us up to 16k

Using Handbook 2008 my ork list was:
3x Great Gargant
2x Gargant ÂÂ
3x 5 Fighta Bombas
2x Landa    ÂÂ
1x Supa Stompa, 3 Stompas, 4 Dreads
1x 9 Stompas, 6 Killa Kanz, 8 Dreads
2x Warband, 2 Nobz
1x 8 DeathKoptaz
4x 12 Gunzwagonz, 3 Oddboyz
2x 12 Gunzwagonz, 2 Flak, 2 Oddboyz
1x 8 Buggies
1x 16 Warbikes
4x 2 Battlefortress, Big Warband
2x 10 Big Gunz, 2 Oddboyz, 2 Nobz
1x 12 Stormboyz
1x 2 Steam Gargants
1x Orkeosaurus, 2 Squiggoths, Warband
1x Warband, Junkatrukks.
1x Warband, Squig Catapults
1x 15 Boarboyz
My mates armies were roughly 5K each, and we used the simultaneous multiple player rules. Each turn they all took an acivation  and I took three activations, (with optional retains as usual). I divided my army into roughly 3 separate 'divisions' or legal tournament armies before the game and had to select a formation from each for these activations, rather than from just whatever I wanted.
Setup below.