So in order to promote the Aliens: Colonial Marines game over at Pax East (a big gaming convention for those who don't know) they made a life-size Power Loader from the movie, complete with giant xeno. Whats even cooler is that you can actually get in and get your picture taken. Wish I could have seen in in person. So jealous. :)
Here is an article that talks about it in more detail. Super cool.