I found the massive Lego Imperial Shuttle on sale several months ago, and finally had the time to put it together this afternoon. At 2,503 pieces, it's a sizable model with very good detail. It can be displayed in one of two ways: on its stand with its wings down, or on its landing gear with its wings folded up. In my opinion, it makes an excellent companion to the Death Star II and the Millennium Falcon.
Unlike the Millennium Falcon (which took the better part of two days to assemble -- a total of about 14 hours), my friends and I were able to build the Imperial Shuttle in only about four hours. The piece count is high, but nothing about the assembly is particularly challenging.
Below is a record of our progress throughout the afternoon.