I was browsing around after Forgeworld's announcement earlier, and just happen to notice images of one of my own models over on 40k wiki. http://warhammer40k.wikia.com/wiki/Colossus_(Siege_Tank)
Very surprised, and cool that this is there. Not often I see my own models floating around the net.
The model above is a custom made Colossus Siege Tank. I have two of these. They were custom done back in 5th edition along with some Hydra Flak tanks with the help of a friend. We carefully measured forgeworld tanks, and made sure that these were all done according to the proper model sizes.
Note that the hulls are Basilisk Hulls, and the that weapons and platforms are made to be interchangeable. Here are some pics from way way back.