Who's excited for "So You Think You Can Dance" tonight?? The lovely and hilarious Christina Applegate is returning to guest judge, plus we'll find out which two dancers will be first to leave the competition. It promises, in other words, to be quite a show.
To get you even more pumped up, here's FOX's nifty time-lapse video from last week's episode. It shows the Top 20 preparing for that stellar Nappytabs opening number—getting made up, rehearsing, goofing around—and then speeds through the whole routine from a few different camera angles, so you can see some of the behind-the-scenes action. Take a look!