R2's Advanced Commands
In addition to the commands listed in the Command Guide, R2 has some advanced commands (sometimes known as Easter Eggs) built in.

Advanced Command #1 - Follow Me

In Companion Mode, if you say "Follow Me," R2 will turn to find you and then attempt to follow you around. Go slowly though, or R2 will lose you and turn the other direction.

Advanced Command #2 - Come Here

Also in Companion Mode, if you say "Come Here," R2 will attempt to find you and come to you. Since this feature relies on R2's heat sensing technology, kneel down in front of R2. R2 may not come directly to you, but R2 will try and find you.

Advanced Command #3 - Imperial March Song

R2 plays up to 5 songs, but only the Cantina song is expressly mentioned in the Command Guide.

To play the Imperial March, go to Character Mode by asking "Do You Remember." Ask R2 about Darth Vader and Anakin (in any order) and R2 will play the song.

Advanced Command #4 - Sad Cantina Song

Another song that R2 plays is actually a different version of the song he sings if you command him to do the dance program (in game mode). When R2 is in a sad mood, he will play a sad version of the Cantina song. There are many ways to put R2 into a sad mood. The easiest is in 'Do You Remember'. If you ask about Darth Vader, R2 will go into a sad mood. You can tell, because his mood status indicator will be red instead of blue.

Advanced Command #5 - Celebration Song

The Celebration Song is another one of the 5 songs that R2 plays and is not expressly mentioned in the Command Guide.

To play the Celebration song, go to Character Mode by asking "Do You Remember." Ask R2 about Chewbacca, Han Solo, and Luke Skywalker (in any order), and R2 will play the celebration song.

Advanced Command #6 - A "Special Surprise"

The final hidden gem for R2 really takes a little work, as well as really knowing your droid.

First, have R2 turn on his light beam by saying "light beam." With his light beam on, tap R2 three times on the head, and then place him into Game Mode by telling R2 "Game Mode" and then "Dance program." R2 will have a special dance, just for you.