A decent sized Lego Normandy SR2 from the game Mass Effect 2. I've made this entirely in Lego Digital Designer, it was very hard to do, trying to line up all the bricks, etc.. but i got there. I doubt it would be very sturdy if constructed in actual Lego however.
About this creation
You see the piece circled above? (The 1x1 flat tile in dark grey) Well i wanted to point out that it's not really supposed to be there. It's there because i intended on buying this model originally, and Lego Digital Designer didn't let me put this piece where i needed it to go, so i stuck it on the outside, so that if i did order this model, i'd get the piece. Simples ^_^