Ticket to Ride. In fact, I think it is one of the greatest games ever made due to its simplicity and accessibility. So I'm always eagerly awaiting another map or another expansion from Days of Wonder. Well, here it comes... Monsters. Yes, Godzilla-style monsters to block your routes. You can read all about it here.
Some of the commenters on the DOW blog are all up in arms about this new exansion, something about not working with the theme at all. Oh well. From what I see, this expansion will add some really nasty player interaction and make the Locomotive cards more appealing to grab without adding any more luck. I, for one, can't wait for aliens to tear through Salt Lake City and Montreal.... :D