Although Christopher Eccleston declined to appear in the Doctor Who 50th Anniversary Special, Eleven and Nine do enjoy a brief encounter in Alisa Stern's always charming Doctor Puppet web series. Naturally, it's a rose that joins them.
You can get caught up on the stop-motion series here, but this episode is perfectly delightful on its own. And it's chock full of small references to the various Doctors and their adventures.
[via The Mary Sue]